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Finding the Fourth Proportional to 754,836.88, 1,041,660 and 415,310.80

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Solution

The fourth proportional to 754,836.88, 1,041,660 and 415,310.80 is: 573,120.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    754,836.88 : 1,041,660 = 415,310.80 : x
  2. Step 2: Convert to fraction form
    754,836.88/1,041,660 = 415,310.80/x
  3. Step 3: Cross multiply
    754,836.88x = 1,041,660 × 415,310.80
  4. Step 4: Simplify right side
    754,836.88x = 432,612,647,928
  5. Step 5: Solve for x
    x = 432,612,647,928/754,836.88
  6. Step 6: Final answer
    x = 573,120.71

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1.5x scale

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.