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Finding the Fourth Proportional to 1,320,792, 1,822,692.96 and 717,180

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Solution

The fourth proportional to 1,320,792, 1,822,692.96 and 717,180 is: 989,708.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,792 : 1,822,692.96 = 717,180 : x
  2. Step 2: Convert to fraction form
    1,320,792/1,822,692.96 = 717,180/x
  3. Step 3: Cross multiply
    1,320,792x = 1,822,692.96 × 717,180
  4. Step 4: Simplify right side
    1,320,792x = 1,307,198,937,052.80
  5. Step 5: Solve for x
    x = 1,307,198,937,052.80/1,320,792
  6. Step 6: Final answer
    x = 989,708.40

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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.