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Finding the Fourth Proportional to 543,124.20, 814,686.30 and 342,357.60

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Solution

The fourth proportional to 543,124.20, 814,686.30 and 342,357.60 is: 513,536.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,124.20 : 814,686.30 = 342,357.60 : x
  2. Step 2: Convert to fraction form
    543,124.20/814,686.30 = 342,357.60/x
  3. Step 3: Cross multiply
    543,124.20x = 814,686.30 × 342,357.60
  4. Step 4: Simplify right side
    543,124.20x = 278,914,046,420.88
  5. Step 5: Solve for x
    x = 278,914,046,420.88/543,124.20
  6. Step 6: Final answer
    x = 513,536.40

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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.