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Finding the Fourth Proportional to 665,045.20, 996,358.20 and 383,726.80

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Solution

The fourth proportional to 665,045.20, 996,358.20 and 383,726.80 is: 574,892.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,045.20 : 996,358.20 = 383,726.80 : x
  2. Step 2: Convert to fraction form
    665,045.20/996,358.20 = 383,726.80/x
  3. Step 3: Cross multiply
    665,045.20x = 996,358.20 × 383,726.80
  4. Step 4: Simplify right side
    665,045.20x = 382,329,343,739.76
  5. Step 5: Solve for x
    x = 382,329,343,739.76/665,045.20
  6. Step 6: Final answer
    x = 574,892.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.