Home / 678,578.90-1,017,480.76-278,890.88

Finding the Fourth Proportional to 678,578.90, 1,017,480.76 and 278,890.88

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Solution

The fourth proportional to 678,578.90, 1,017,480.76 and 278,890.88 is: 418,177.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,578.90 : 1,017,480.76 = 278,890.88 : x
  2. Step 2: Convert to fraction form
    678,578.90/1,017,480.76 = 278,890.88/x
  3. Step 3: Cross multiply
    678,578.90x = 1,017,480.76 × 278,890.88
  4. Step 4: Simplify right side
    678,578.90x = 283,766,098,754.84
  5. Step 5: Solve for x
    x = 283,766,098,754.84/678,578.90
  6. Step 6: Final answer
    x = 418,177.02

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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.