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Finding the Fourth Proportional to 608,768.20, 914,189.10 and 432,512.20

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Solution

The fourth proportional to 608,768.20, 914,189.10 and 432,512.20 is: 649,504.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,768.20 : 914,189.10 = 432,512.20 : x
  2. Step 2: Convert to fraction form
    608,768.20/914,189.10 = 432,512.20/x
  3. Step 3: Cross multiply
    608,768.20x = 914,189.10 × 432,512.20
  4. Step 4: Simplify right side
    608,768.20x = 395,397,938,857.02
  5. Step 5: Solve for x
    x = 395,397,938,857.02/608,768.20
  6. Step 6: Final answer
    x = 649,504.92

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.