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Finding the Fourth Proportional to 769,397.40, 1,156,064.40 and 682,792.20

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Solution

The fourth proportional to 769,397.40, 1,156,064.40 and 682,792.20 is: 1,025,935.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,397.40 : 1,156,064.40 = 682,792.20 : x
  2. Step 2: Convert to fraction form
    769,397.40/1,156,064.40 = 682,792.20/x
  3. Step 3: Cross multiply
    769,397.40x = 1,156,064.40 × 682,792.20
  4. Step 4: Simplify right side
    769,397.40x = 789,351,755,017.68
  5. Step 5: Solve for x
    x = 789,351,755,017.68/769,397.40
  6. Step 6: Final answer
    x = 1,025,935.04

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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.