Home / 872,768.13-1,309,139.04-392,656.87

Finding the Fourth Proportional to 872,768.13, 1,309,139.04 and 392,656.87

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Solution

The fourth proportional to 872,768.13, 1,309,139.04 and 392,656.87 is: 588,979.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,768.13 : 1,309,139.04 = 392,656.87 : x
  2. Step 2: Convert to fraction form
    872,768.13/1,309,139.04 = 392,656.87/x
  3. Step 3: Cross multiply
    872,768.13x = 1,309,139.04 × 392,656.87
  4. Step 4: Simplify right side
    872,768.13x = 514,042,437,841.21
  5. Step 5: Solve for x
    x = 514,042,437,841.21/872,768.13
  6. Step 6: Final answer
    x = 588,979.39

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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.