Home / 769,410.66-1,062,083.04-688,695.78

Finding the Fourth Proportional to 769,410.66, 1,062,083.04 and 688,695.78

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Solution

The fourth proportional to 769,410.66, 1,062,083.04 and 688,695.78 is: 950,665.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,410.66 : 1,062,083.04 = 688,695.78 : x
  2. Step 2: Convert to fraction form
    769,410.66/1,062,083.04 = 688,695.78/x
  3. Step 3: Cross multiply
    769,410.66x = 1,062,083.04 × 688,695.78
  4. Step 4: Simplify right side
    769,410.66x = 731,452,107,657.57
  5. Step 5: Solve for x
    x = 731,452,107,657.57/769,410.66
  6. Step 6: Final answer
    x = 950,665.42

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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.