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Finding the Fourth Proportional to 488,336.80, 732,505.20 and 440,125.60

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Solution

The fourth proportional to 488,336.80, 732,505.20 and 440,125.60 is: 660,188.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,336.80 : 732,505.20 = 440,125.60 : x
  2. Step 2: Convert to fraction form
    488,336.80/732,505.20 = 440,125.60/x
  3. Step 3: Cross multiply
    488,336.80x = 732,505.20 × 440,125.60
  4. Step 4: Simplify right side
    488,336.80x = 322,394,290,653.12
  5. Step 5: Solve for x
    x = 322,394,290,653.12/488,336.80
  6. Step 6: Final answer
    x = 660,188.40

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Similar ratio
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1.5x scale

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.