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Finding the Fourth Proportional to 701,728.88, 968,385.17 and 379,438.20

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Solution

The fourth proportional to 701,728.88, 968,385.17 and 379,438.20 is: 523,624.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    701,728.88 : 968,385.17 = 379,438.20 : x
  2. Step 2: Convert to fraction form
    701,728.88/968,385.17 = 379,438.20/x
  3. Step 3: Cross multiply
    701,728.88x = 968,385.17 × 379,438.20
  4. Step 4: Simplify right side
    701,728.88x = 367,442,326,760.09
  5. Step 5: Solve for x
    x = 367,442,326,760.09/701,728.88
  6. Step 6: Final answer
    x = 523,624.35

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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.