Home / 429,176.30-643,764.45-329,837.90

Finding the Fourth Proportional to 429,176.30, 643,764.45 and 329,837.90

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Solution

The fourth proportional to 429,176.30, 643,764.45 and 329,837.90 is: 494,756.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,176.30 : 643,764.45 = 329,837.90 : x
  2. Step 2: Convert to fraction form
    429,176.30/643,764.45 = 329,837.90/x
  3. Step 3: Cross multiply
    429,176.30x = 643,764.45 × 329,837.90
  4. Step 4: Simplify right side
    429,176.30x = 212,337,914,282.66
  5. Step 5: Solve for x
    x = 212,337,914,282.66/429,176.30
  6. Step 6: Final answer
    x = 494,756.85

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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.