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Finding the Fourth Proportional to 546,043.20, 819,064.80 and 431,881.80

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Solution

The fourth proportional to 546,043.20, 819,064.80 and 431,881.80 is: 647,822.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    546,043.20 : 819,064.80 = 431,881.80 : x
  2. Step 2: Convert to fraction form
    546,043.20/819,064.80 = 431,881.80/x
  3. Step 3: Cross multiply
    546,043.20x = 819,064.80 × 431,881.80
  4. Step 4: Simplify right side
    546,043.20x = 353,739,180,140.64
  5. Step 5: Solve for x
    x = 353,739,180,140.64/546,043.20
  6. Step 6: Final answer
    x = 647,822.70

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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.