Home / 516,552,971.40-712,836,292.86-290,491,887.96

Finding the Fourth Proportional to 516,552,971.40, 712,836,292.86 and 290,491,887.96

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Solution

The fourth proportional to 516,552,971.40, 712,836,292.86 and 290,491,887.96 is: 400,874,976.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,552,971.40 : 712,836,292.86 = 290,491,887.96 : x
  2. Step 2: Convert to fraction form
    516,552,971.40/712,836,292.86 = 290,491,887.96/x
  3. Step 3: Cross multiply
    516,552,971.40x = 712,836,292.86 × 290,491,887.96
  4. Step 4: Simplify right side
    516,552,971.40x = 207,073,160,519,308,864
  5. Step 5: Solve for x
    x = 207,073,160,519,308,864/516,552,971.40
  6. Step 6: Final answer
    x = 400,874,976.98

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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.