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Finding the Fourth Proportional to 648,280.80, 972,421.20 and 332,769.60

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Solution

The fourth proportional to 648,280.80, 972,421.20 and 332,769.60 is: 499,154.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,280.80 : 972,421.20 = 332,769.60 : x
  2. Step 2: Convert to fraction form
    648,280.80/972,421.20 = 332,769.60/x
  3. Step 3: Cross multiply
    648,280.80x = 972,421.20 × 332,769.60
  4. Step 4: Simplify right side
    648,280.80x = 323,592,213,755.52
  5. Step 5: Solve for x
    x = 323,592,213,755.52/648,280.80
  6. Step 6: Final answer
    x = 499,154.40

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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.