Home / 872,775.14-1,309,149.54-392,663.90

Finding the Fourth Proportional to 872,775.14, 1,309,149.54 and 392,663.90

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Solution

The fourth proportional to 872,775.14, 1,309,149.54 and 392,663.90 is: 588,989.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,775.14 : 1,309,149.54 = 392,663.90 : x
  2. Step 2: Convert to fraction form
    872,775.14/1,309,149.54 = 392,663.90/x
  3. Step 3: Cross multiply
    872,775.14x = 1,309,149.54 × 392,663.90
  4. Step 4: Simplify right side
    872,775.14x = 514,055,764,059.61
  5. Step 5: Solve for x
    x = 514,055,764,059.61/872,775.14
  6. Step 6: Final answer
    x = 588,989.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.