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Finding the Fourth Proportional to 663,447.54, 915,524.53 and 376,929.78

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Solution

The fourth proportional to 663,447.54, 915,524.53 and 376,929.78 is: 520,144.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,447.54 : 915,524.53 = 376,929.78 : x
  2. Step 2: Convert to fraction form
    663,447.54/915,524.53 = 376,929.78/x
  3. Step 3: Cross multiply
    663,447.54x = 915,524.53 × 376,929.78
  4. Step 4: Simplify right side
    663,447.54x = 345,088,459,677.50
  5. Step 5: Solve for x
    x = 345,088,459,677.50/663,447.54
  6. Step 6: Final answer
    x = 520,144.31

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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.