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Finding the Fourth Proportional to 641,728.22, 886,002.74 and 412,373.88

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Solution

The fourth proportional to 641,728.22, 886,002.74 and 412,373.88 is: 569,344.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,728.22 : 886,002.74 = 412,373.88 : x
  2. Step 2: Convert to fraction form
    641,728.22/886,002.74 = 412,373.88/x
  3. Step 3: Cross multiply
    641,728.22x = 886,002.74 × 412,373.88
  4. Step 4: Simplify right side
    641,728.22x = 365,364,385,522.56
  5. Step 5: Solve for x
    x = 365,364,385,522.56/641,728.22
  6. Step 6: Final answer
    x = 569,344.43

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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.