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Finding the Fourth Proportional to 605,836.80, 908,755.20 and 487,738.80

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Solution

The fourth proportional to 605,836.80, 908,755.20 and 487,738.80 is: 731,608.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,836.80 : 908,755.20 = 487,738.80 : x
  2. Step 2: Convert to fraction form
    605,836.80/908,755.20 = 487,738.80/x
  3. Step 3: Cross multiply
    605,836.80x = 908,755.20 × 487,738.80
  4. Step 4: Simplify right side
    605,836.80x = 443,235,170,741.76
  5. Step 5: Solve for x
    x = 443,235,170,741.76/605,836.80
  6. Step 6: Final answer
    x = 731,608.20

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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.