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Finding the Fourth Proportional to 674,255.27, 930,500.60 and 387,775.62

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Solution

The fourth proportional to 674,255.27, 930,500.60 and 387,775.62 is: 535,146.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,255.27 : 930,500.60 = 387,775.62 : x
  2. Step 2: Convert to fraction form
    674,255.27/930,500.60 = 387,775.62/x
  3. Step 3: Cross multiply
    674,255.27x = 930,500.60 × 387,775.62
  4. Step 4: Simplify right side
    674,255.27x = 360,825,445,136.49
  5. Step 5: Solve for x
    x = 360,825,445,136.49/674,255.27
  6. Step 6: Final answer
    x = 535,146.64

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.