Home / 709,753.10-979,460.84-387,463.28

Finding the Fourth Proportional to 709,753.10, 979,460.84 and 387,463.28

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Solution

The fourth proportional to 709,753.10, 979,460.84 and 387,463.28 is: 534,700.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,753.10 : 979,460.84 = 387,463.28 : x
  2. Step 2: Convert to fraction form
    709,753.10/979,460.84 = 387,463.28/x
  3. Step 3: Cross multiply
    709,753.10x = 979,460.84 × 387,463.28
  4. Step 4: Simplify right side
    709,753.10x = 379,505,105,769.31
  5. Step 5: Solve for x
    x = 379,505,105,769.31/709,753.10
  6. Step 6: Final answer
    x = 534,700.18

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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.