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Finding the Fourth Proportional to 663,178.56, 915,153.84 and 376,661.04

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Solution

The fourth proportional to 663,178.56, 915,153.84 and 376,661.04 is: 519,773.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,178.56 : 915,153.84 = 376,661.04 : x
  2. Step 2: Convert to fraction form
    663,178.56/915,153.84 = 376,661.04/x
  3. Step 3: Cross multiply
    663,178.56x = 915,153.84 × 376,661.04
  4. Step 4: Simplify right side
    663,178.56x = 344,702,797,134.39
  5. Step 5: Solve for x
    x = 344,702,797,134.39/663,178.56
  6. Step 6: Final answer
    x = 519,773.74

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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.