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Finding the Fourth Proportional to 663,247.62, 915,306.30 and 376,816.32

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Solution

The fourth proportional to 663,247.62, 915,306.30 and 376,816.32 is: 520,020.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,247.62 : 915,306.30 = 376,816.32 : x
  2. Step 2: Convert to fraction form
    663,247.62/915,306.30 = 376,816.32/x
  3. Step 3: Cross multiply
    663,247.62x = 915,306.30 × 376,816.32
  4. Step 4: Simplify right side
    663,247.62x = 344,902,351,638.82
  5. Step 5: Solve for x
    x = 344,902,351,638.82/663,247.62
  6. Step 6: Final answer
    x = 520,020.49

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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.