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Finding the Fourth Proportional to 663,598.20, 915,726.06 and 377,078.52

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Solution

The fourth proportional to 663,598.20, 915,726.06 and 377,078.52 is: 520,345.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,598.20 : 915,726.06 = 377,078.52 : x
  2. Step 2: Convert to fraction form
    663,598.20/915,726.06 = 377,078.52/x
  3. Step 3: Cross multiply
    663,598.20x = 915,726.06 × 377,078.52
  4. Step 4: Simplify right side
    663,598.20x = 345,300,627,430.23
  5. Step 5: Solve for x
    x = 345,300,627,430.23/663,598.20
  6. Step 6: Final answer
    x = 520,345.94

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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.