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Finding the Fourth Proportional to 663,447.04, 915,523.84 and 376,929.28

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Solution

The fourth proportional to 663,447.04, 915,523.84 and 376,929.28 is: 520,143.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,447.04 : 915,523.84 = 376,929.28 : x
  2. Step 2: Convert to fraction form
    663,447.04/915,523.84 = 376,929.28/x
  3. Step 3: Cross multiply
    663,447.04x = 915,523.84 × 376,929.28
  4. Step 4: Simplify right side
    663,447.04x = 345,087,741,834.04
  5. Step 5: Solve for x
    x = 345,087,741,834.04/663,447.04
  6. Step 6: Final answer
    x = 520,143.62

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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.