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Finding the Fourth Proportional to 488,430.80, 732,646.20 and 440,219.60

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Solution

The fourth proportional to 488,430.80, 732,646.20 and 440,219.60 is: 660,329.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,430.80 : 732,646.20 = 440,219.60 : x
  2. Step 2: Convert to fraction form
    488,430.80/732,646.20 = 440,219.60/x
  3. Step 3: Cross multiply
    488,430.80x = 732,646.20 × 440,219.60
  4. Step 4: Simplify right side
    488,430.80x = 322,525,217,105.52
  5. Step 5: Solve for x
    x = 322,525,217,105.52/488,430.80
  6. Step 6: Final answer
    x = 660,329.40

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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.