Home / 1,290,363.76-1,780,600.68-717,369.04

Finding the Fourth Proportional to 1,290,363.76, 1,780,600.68 and 717,369.04

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Solution

The fourth proportional to 1,290,363.76, 1,780,600.68 and 717,369.04 is: 989,912.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,363.76 : 1,780,600.68 = 717,369.04 : x
  2. Step 2: Convert to fraction form
    1,290,363.76/1,780,600.68 = 717,369.04/x
  3. Step 3: Cross multiply
    1,290,363.76x = 1,780,600.68 × 717,369.04
  4. Step 4: Simplify right side
    1,290,363.76x = 1,277,347,800,434.95
  5. Step 5: Solve for x
    x = 1,277,347,800,434.95/1,290,363.76
  6. Step 6: Final answer
    x = 989,912.95

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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.