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Finding the Fourth Proportional to 486,002.60, 729,003.90 and 307,980.80

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Solution

The fourth proportional to 486,002.60, 729,003.90 and 307,980.80 is: 461,971.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,002.60 : 729,003.90 = 307,980.80 : x
  2. Step 2: Convert to fraction form
    486,002.60/729,003.90 = 307,980.80/x
  3. Step 3: Cross multiply
    486,002.60x = 729,003.90 × 307,980.80
  4. Step 4: Simplify right side
    486,002.60x = 224,519,204,325.12
  5. Step 5: Solve for x
    x = 224,519,204,325.12/486,002.60
  6. Step 6: Final answer
    x = 461,971.20

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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.