Home / 426,117.17-639,263.23-126,571.07

Finding the Fourth Proportional to 426,117.17, 639,263.23 and 126,571.07

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Solution

The fourth proportional to 426,117.17, 639,263.23 and 126,571.07 is: 189,882.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,117.17 : 639,263.23 = 126,571.07 : x
  2. Step 2: Convert to fraction form
    426,117.17/639,263.23 = 126,571.07/x
  3. Step 3: Cross multiply
    426,117.17x = 639,263.23 × 126,571.07
  4. Step 4: Simplify right side
    426,117.17x = 80,912,227,203.58
  5. Step 5: Solve for x
    x = 80,912,227,203.58/426,117.17
  6. Step 6: Final answer
    x = 189,882.58

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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.