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Finding the Fourth Proportional to 656,321.04, 905,723.04 and 354,515.04

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Solution

The fourth proportional to 656,321.04, 905,723.04 and 354,515.04 is: 489,230.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,321.04 : 905,723.04 = 354,515.04 : x
  2. Step 2: Convert to fraction form
    656,321.04/905,723.04 = 354,515.04/x
  3. Step 3: Cross multiply
    656,321.04x = 905,723.04 × 354,515.04
  4. Step 4: Simplify right side
    656,321.04x = 321,092,439,754.52
  5. Step 5: Solve for x
    x = 321,092,439,754.52/656,321.04
  6. Step 6: Final answer
    x = 489,230.76

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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.