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Finding the Fourth Proportional to 486,600.80, 729,901.20 and 352,853.60

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Solution

The fourth proportional to 486,600.80, 729,901.20 and 352,853.60 is: 529,280.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,600.80 : 729,901.20 = 352,853.60 : x
  2. Step 2: Convert to fraction form
    486,600.80/729,901.20 = 352,853.60/x
  3. Step 3: Cross multiply
    486,600.80x = 729,901.20 × 352,853.60
  4. Step 4: Simplify right side
    486,600.80x = 257,548,266,064.32
  5. Step 5: Solve for x
    x = 257,548,266,064.32/486,600.80
  6. Step 6: Final answer
    x = 529,280.40

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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.