Home / 429,780.30-643,784.49-251,747.57

Finding the Fourth Proportional to 429,780.30, 643,784.49 and 251,747.57

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Solution

The fourth proportional to 429,780.30, 643,784.49 and 251,747.57 is: 377,102.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,780.30 : 643,784.49 = 251,747.57 : x
  2. Step 2: Convert to fraction form
    429,780.30/643,784.49 = 251,747.57/x
  3. Step 3: Cross multiply
    429,780.30x = 643,784.49 × 251,747.57
  4. Step 4: Simplify right side
    429,780.30x = 162,071,177,742.27
  5. Step 5: Solve for x
    x = 162,071,177,742.27/429,780.30
  6. Step 6: Final answer
    x = 377,102.39

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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.