Home / 1,217,282,645.81-1,679,708,333.26-681,463,651.43

Finding the Fourth Proportional to 1,217,282,645.81, 1,679,708,333.26 and 681,463,651.43

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Solution

The fourth proportional to 1,217,282,645.81, 1,679,708,333.26 and 681,463,651.43 is: 940,340,501.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,282,645.81 : 1,679,708,333.26 = 681,463,651.43 : x
  2. Step 2: Convert to fraction form
    1,217,282,645.81/1,679,708,333.26 = 681,463,651.43/x
  3. Step 3: Cross multiply
    1,217,282,645.81x = 1,679,708,333.26 × 681,463,651.43
  4. Step 4: Simplify right side
    1,217,282,645.81x = 1,144,660,174,120,758,784
  5. Step 5: Solve for x
    x = 1,144,660,174,120,758,784/1,217,282,645.81
  6. Step 6: Final answer
    x = 940,340,501.90

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Half scale
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Double scale
Find fourth proportional to 1,217,282,646.81, 1,679,708,334.64 and 681,463,652.43
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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.