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Finding the Fourth Proportional to 489,252.80, 733,879.20 and 437,931.20

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Solution

The fourth proportional to 489,252.80, 733,879.20 and 437,931.20 is: 656,896.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,252.80 : 733,879.20 = 437,931.20 : x
  2. Step 2: Convert to fraction form
    489,252.80/733,879.20 = 437,931.20/x
  3. Step 3: Cross multiply
    489,252.80x = 733,879.20 × 437,931.20
  4. Step 4: Simplify right side
    489,252.80x = 321,388,598,711.04
  5. Step 5: Solve for x
    x = 321,388,598,711.04/489,252.80
  6. Step 6: Final answer
    x = 656,896.80

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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.