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Finding the Fourth Proportional to 648,016.80, 972,025.20 and 332,505.60

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Solution

The fourth proportional to 648,016.80, 972,025.20 and 332,505.60 is: 498,758.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,016.80 : 972,025.20 = 332,505.60 : x
  2. Step 2: Convert to fraction form
    648,016.80/972,025.20 = 332,505.60/x
  3. Step 3: Cross multiply
    648,016.80x = 972,025.20 × 332,505.60
  4. Step 4: Simplify right side
    648,016.80x = 323,203,822,341.12
  5. Step 5: Solve for x
    x = 323,203,822,341.12/648,016.80
  6. Step 6: Final answer
    x = 498,758.40

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Double scale
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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.