Home / 429,872.24-643,591.74-328,554.20

Finding the Fourth Proportional to 429,872.24, 643,591.74 and 328,554.20

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Solution

The fourth proportional to 429,872.24, 643,591.74 and 328,554.20 is: 491,901.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,872.24 : 643,591.74 = 328,554.20 : x
  2. Step 2: Convert to fraction form
    429,872.24/643,591.74 = 328,554.20/x
  3. Step 3: Cross multiply
    429,872.24x = 643,591.74 × 328,554.20
  4. Step 4: Simplify right side
    429,872.24x = 211,454,769,262.31
  5. Step 5: Solve for x
    x = 211,454,769,262.31/429,872.24
  6. Step 6: Final answer
    x = 491,901.43

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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.