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Finding the Fourth Proportional to 663,358.92, 915,460.02 and 376,927.56

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Solution

The fourth proportional to 663,358.92, 915,460.02 and 376,927.56 is: 520,174.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,358.92 : 915,460.02 = 376,927.56 : x
  2. Step 2: Convert to fraction form
    663,358.92/915,460.02 = 376,927.56/x
  3. Step 3: Cross multiply
    663,358.92x = 915,460.02 × 376,927.56
  4. Step 4: Simplify right side
    663,358.92x = 345,062,111,616.15
  5. Step 5: Solve for x
    x = 345,062,111,616.15/663,358.92
  6. Step 6: Final answer
    x = 520,174.07

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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.