Home / 426,016.90-639,157.94-126,499.04

Finding the Fourth Proportional to 426,016.90, 639,157.94 and 126,499.04

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Solution

The fourth proportional to 426,016.90, 639,157.94 and 126,499.04 is: 189,787.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,016.90 : 639,157.94 = 126,499.04 : x
  2. Step 2: Convert to fraction form
    426,016.90/639,157.94 = 126,499.04/x
  3. Step 3: Cross multiply
    426,016.90x = 639,157.94 × 126,499.04
  4. Step 4: Simplify right side
    426,016.90x = 80,852,865,818.38
  5. Step 5: Solve for x
    x = 80,852,865,818.38/426,016.90
  6. Step 6: Final answer
    x = 189,787.93

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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.