Home / 1,217,282,643.81-1,679,708,330.51-681,463,649.43

Finding the Fourth Proportional to 1,217,282,643.81, 1,679,708,330.51 and 681,463,649.43

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Solution

The fourth proportional to 1,217,282,643.81, 1,679,708,330.51 and 681,463,649.43 is: 940,340,499.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,282,643.81 : 1,679,708,330.51 = 681,463,649.43 : x
  2. Step 2: Convert to fraction form
    1,217,282,643.81/1,679,708,330.51 = 681,463,649.43/x
  3. Step 3: Cross multiply
    1,217,282,643.81x = 1,679,708,330.51 × 681,463,649.43
  4. Step 4: Simplify right side
    1,217,282,643.81x = 1,144,660,168,883,909,888
  5. Step 5: Solve for x
    x = 1,144,660,168,883,909,888/1,217,282,643.81
  6. Step 6: Final answer
    x = 940,340,499.15

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Half scale
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Double scale
Find fourth proportional to 1,217,282,644.81, 1,679,708,331.88 and 681,463,650.43
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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.