Home / 515,537,959.50-711,458,008.56-280,605,608.10

Finding the Fourth Proportional to 515,537,959.50, 711,458,008.56 and 280,605,608.10

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Solution

The fourth proportional to 515,537,959.50, 711,458,008.56 and 280,605,608.10 is: 387,244,243.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,537,959.50 : 711,458,008.56 = 280,605,608.10 : x
  2. Step 2: Convert to fraction form
    515,537,959.50/711,458,008.56 = 280,605,608.10/x
  3. Step 3: Cross multiply
    515,537,959.50x = 711,458,008.56 × 280,605,608.10
  4. Step 4: Simplify right side
    515,537,959.50x = 199,639,107,129,593,792
  5. Step 5: Solve for x
    x = 199,639,107,129,593,792/515,537,959.50
  6. Step 6: Final answer
    x = 387,244,243.51

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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.