Home / 781,888.97-1,078,450.42-717,565.97

Finding the Fourth Proportional to 781,888.97, 1,078,450.42 and 717,565.97

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Solution

The fourth proportional to 781,888.97, 1,078,450.42 and 717,565.97 is: 989,730.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,888.97 : 1,078,450.42 = 717,565.97 : x
  2. Step 2: Convert to fraction form
    781,888.97/1,078,450.42 = 717,565.97/x
  3. Step 3: Cross multiply
    781,888.97x = 1,078,450.42 × 717,565.97
  4. Step 4: Simplify right side
    781,888.97x = 773,859,318,136.38
  5. Step 5: Solve for x
    x = 773,859,318,136.38/781,888.97
  6. Step 6: Final answer
    x = 989,730.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.