Home / 516,552,947.22-712,836,259.62-290,491,863.86

Finding the Fourth Proportional to 516,552,947.22, 712,836,259.62 and 290,491,863.86

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Solution

The fourth proportional to 516,552,947.22, 712,836,259.62 and 290,491,863.86 is: 400,874,943.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,552,947.22 : 712,836,259.62 = 290,491,863.86 : x
  2. Step 2: Convert to fraction form
    516,552,947.22/712,836,259.62 = 290,491,863.86/x
  3. Step 3: Cross multiply
    516,552,947.22x = 712,836,259.62 × 290,491,863.86
  4. Step 4: Simplify right side
    516,552,947.22x = 207,073,133,678,988,032
  5. Step 5: Solve for x
    x = 207,073,133,678,988,032/516,552,947.22
  6. Step 6: Final answer
    x = 400,874,943.79

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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.