Home / 515,540,066.09-711,445,251.74-280,592,411.13

Finding the Fourth Proportional to 515,540,066.09, 711,445,251.74 and 280,592,411.13

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Solution

The fourth proportional to 515,540,066.09, 711,445,251.74 and 280,592,411.13 is: 387,217,505.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,540,066.09 : 711,445,251.74 = 280,592,411.13 : x
  2. Step 2: Convert to fraction form
    515,540,066.09/711,445,251.74 = 280,592,411.13/x
  3. Step 3: Cross multiply
    515,540,066.09x = 711,445,251.74 × 280,592,411.13
  4. Step 4: Simplify right side
    515,540,066.09x = 199,626,138,571,313,472
  5. Step 5: Solve for x
    x = 199,626,138,571,313,472/515,540,066.09
  6. Step 6: Final answer
    x = 387,217,505.88

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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.