Home / 709,462.13-979,078.39-387,192.83

Finding the Fourth Proportional to 709,462.13, 979,078.39 and 387,192.83

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Solution

The fourth proportional to 709,462.13, 979,078.39 and 387,192.83 is: 534,337.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,462.13 : 979,078.39 = 387,192.83 : x
  2. Step 2: Convert to fraction form
    709,462.13/979,078.39 = 387,192.83/x
  3. Step 3: Cross multiply
    709,462.13x = 979,078.39 × 387,192.83
  4. Step 4: Simplify right side
    709,462.13x = 379,092,126,752.57
  5. Step 5: Solve for x
    x = 379,092,126,752.57/709,462.13
  6. Step 6: Final answer
    x = 534,337.37

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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.