Home / 543,354.20-815,031.30-318,822.20

Finding the Fourth Proportional to 543,354.20, 815,031.30 and 318,822.20

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Solution

The fourth proportional to 543,354.20, 815,031.30 and 318,822.20 is: 478,233.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,354.20 : 815,031.30 = 318,822.20 : x
  2. Step 2: Convert to fraction form
    543,354.20/815,031.30 = 318,822.20/x
  3. Step 3: Cross multiply
    543,354.20x = 815,031.30 × 318,822.20
  4. Step 4: Simplify right side
    543,354.20x = 259,850,072,134.86
  5. Step 5: Solve for x
    x = 259,850,072,134.86/543,354.20
  6. Step 6: Final answer
    x = 478,233.30

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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.