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Finding the Fourth Proportional to 610,074.70, 915,112.05 and 491,976.70

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Solution

The fourth proportional to 610,074.70, 915,112.05 and 491,976.70 is: 737,965.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,074.70 : 915,112.05 = 491,976.70 : x
  2. Step 2: Convert to fraction form
    610,074.70/915,112.05 = 491,976.70/x
  3. Step 3: Cross multiply
    610,074.70x = 915,112.05 × 491,976.70
  4. Step 4: Simplify right side
    610,074.70x = 450,213,806,489.24
  5. Step 5: Solve for x
    x = 450,213,806,489.24/610,074.70
  6. Step 6: Final answer
    x = 737,965.05

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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.