Home / 426,116.67-639,262.47-126,570.57

Finding the Fourth Proportional to 426,116.67, 639,262.47 and 126,570.57

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Solution

The fourth proportional to 426,116.67, 639,262.47 and 126,570.57 is: 189,881.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,116.67 : 639,262.47 = 126,570.57 : x
  2. Step 2: Convert to fraction form
    426,116.67/639,262.47 = 126,570.57/x
  3. Step 3: Cross multiply
    426,116.67x = 639,262.47 × 126,570.57
  4. Step 4: Simplify right side
    426,116.67x = 80,911,813,284.91
  5. Step 5: Solve for x
    x = 80,911,813,284.91/426,116.67
  6. Step 6: Final answer
    x = 189,881.83

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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.