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Finding the Fourth Proportional to 556,540.80, 834,811.20 and 320,344.80

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Solution

The fourth proportional to 556,540.80, 834,811.20 and 320,344.80 is: 480,517.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,540.80 : 834,811.20 = 320,344.80 : x
  2. Step 2: Convert to fraction form
    556,540.80/834,811.20 = 320,344.80/x
  3. Step 3: Cross multiply
    556,540.80x = 834,811.20 × 320,344.80
  4. Step 4: Simplify right side
    556,540.80x = 267,427,426,901.76
  5. Step 5: Solve for x
    x = 267,427,426,901.76/556,540.80
  6. Step 6: Final answer
    x = 480,517.20

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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.