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Finding the Fourth Proportional to 985,469.60, 1,478,204.40 and 354,301.40

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Solution

The fourth proportional to 985,469.60, 1,478,204.40 and 354,301.40 is: 531,452.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,469.60 : 1,478,204.40 = 354,301.40 : x
  2. Step 2: Convert to fraction form
    985,469.60/1,478,204.40 = 354,301.40/x
  3. Step 3: Cross multiply
    985,469.60x = 1,478,204.40 × 354,301.40
  4. Step 4: Simplify right side
    985,469.60x = 523,729,888,406.16
  5. Step 5: Solve for x
    x = 523,729,888,406.16/985,469.60
  6. Step 6: Final answer
    x = 531,452.10

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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.