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Finding the Fourth Proportional to 486,420.20, 729,630.30 and 476,052.20

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Solution

The fourth proportional to 486,420.20, 729,630.30 and 476,052.20 is: 714,078.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,420.20 : 729,630.30 = 476,052.20 : x
  2. Step 2: Convert to fraction form
    486,420.20/729,630.30 = 476,052.20/x
  3. Step 3: Cross multiply
    486,420.20x = 729,630.30 × 476,052.20
  4. Step 4: Simplify right side
    486,420.20x = 347,342,109,501.66
  5. Step 5: Solve for x
    x = 347,342,109,501.66/486,420.20
  6. Step 6: Final answer
    x = 714,078.30

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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.