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Finding the Fourth Proportional to 663,600.66, 915,767.28 and 377,120.40

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Solution

The fourth proportional to 663,600.66, 915,767.28 and 377,120.40 is: 520,425.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,600.66 : 915,767.28 = 377,120.40 : x
  2. Step 2: Convert to fraction form
    663,600.66/915,767.28 = 377,120.40/x
  3. Step 3: Cross multiply
    663,600.66x = 915,767.28 × 377,120.40
  4. Step 4: Simplify right side
    663,600.66x = 345,354,522,940.51
  5. Step 5: Solve for x
    x = 345,354,522,940.51/663,600.66
  6. Step 6: Final answer
    x = 520,425.23

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.