Home / 429,439.56-644,076.23-129,849.92

Finding the Fourth Proportional to 429,439.56, 644,076.23 and 129,849.92

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Solution

The fourth proportional to 429,439.56, 644,076.23 and 129,849.92 is: 194,749.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,439.56 : 644,076.23 = 129,849.92 : x
  2. Step 2: Convert to fraction form
    429,439.56/644,076.23 = 129,849.92/x
  3. Step 3: Cross multiply
    429,439.56x = 644,076.23 × 129,849.92
  4. Step 4: Simplify right side
    429,439.56x = 83,633,243,069.77
  5. Step 5: Solve for x
    x = 83,633,243,069.77/429,439.56
  6. Step 6: Final answer
    x = 194,749.74

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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.