Home / 486,127.20-729,190.80-318,165.60

Finding the Fourth Proportional to 486,127.20, 729,190.80 and 318,165.60

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Solution

The fourth proportional to 486,127.20, 729,190.80 and 318,165.60 is: 477,248.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,127.20 : 729,190.80 = 318,165.60 : x
  2. Step 2: Convert to fraction form
    486,127.20/729,190.80 = 318,165.60/x
  3. Step 3: Cross multiply
    486,127.20x = 729,190.80 × 318,165.60
  4. Step 4: Simplify right side
    486,127.20x = 232,003,428,396.48
  5. Step 5: Solve for x
    x = 232,003,428,396.48/486,127.20
  6. Step 6: Final answer
    x = 477,248.40

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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.