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Finding the Fourth Proportional to 663,754.82, 915,979.64 and 377,330.09

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Solution

The fourth proportional to 663,754.82, 915,979.64 and 377,330.09 is: 520,714.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,754.82 : 915,979.64 = 377,330.09 : x
  2. Step 2: Convert to fraction form
    663,754.82/915,979.64 = 377,330.09/x
  3. Step 3: Cross multiply
    663,754.82x = 915,979.64 × 377,330.09
  4. Step 4: Simplify right side
    663,754.82x = 345,626,673,532.82
  5. Step 5: Solve for x
    x = 345,626,673,532.82/663,754.82
  6. Step 6: Final answer
    x = 520,714.37

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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.