Home / 1,217,282,639.12-1,679,708,324.10-681,463,644.76

Finding the Fourth Proportional to 1,217,282,639.12, 1,679,708,324.10 and 681,463,644.76

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Solution

The fourth proportional to 1,217,282,639.12, 1,679,708,324.10 and 681,463,644.76 is: 940,340,492.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,282,639.12 : 1,679,708,324.10 = 681,463,644.76 : x
  2. Step 2: Convert to fraction form
    1,217,282,639.12/1,679,708,324.10 = 681,463,644.76/x
  3. Step 3: Cross multiply
    1,217,282,639.12x = 1,679,708,324.10 × 681,463,644.76
  4. Step 4: Simplify right side
    1,217,282,639.12x = 1,144,660,156,670,698,112
  5. Step 5: Solve for x
    x = 1,144,660,156,670,698,112/1,217,282,639.12
  6. Step 6: Final answer
    x = 940,340,492.74

Related Problems

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Half scale
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Double scale
Find fourth proportional to 1,217,282,640.12, 1,679,708,325.48 and 681,463,645.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.