Home / 1,261,287-1,740,612.96-688,363.92

Finding the Fourth Proportional to 1,261,287, 1,740,612.96 and 688,363.92

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Solution

The fourth proportional to 1,261,287, 1,740,612.96 and 688,363.92 is: 949,962.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,287 : 1,740,612.96 = 688,363.92 : x
  2. Step 2: Convert to fraction form
    1,261,287/1,740,612.96 = 688,363.92/x
  3. Step 3: Cross multiply
    1,261,287x = 1,740,612.96 × 688,363.92
  4. Step 4: Simplify right side
    1,261,287x = 1,198,175,160,348.40
  5. Step 5: Solve for x
    x = 1,198,175,160,348.40/1,261,287
  6. Step 6: Final answer
    x = 949,962.35

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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.