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Finding the Fourth Proportional to 491,243.40, 736,865.10 and 341,944.20

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Solution

The fourth proportional to 491,243.40, 736,865.10 and 341,944.20 is: 512,916.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,243.40 : 736,865.10 = 341,944.20 : x
  2. Step 2: Convert to fraction form
    491,243.40/736,865.10 = 341,944.20/x
  3. Step 3: Cross multiply
    491,243.40x = 736,865.10 × 341,944.20
  4. Step 4: Simplify right side
    491,243.40x = 251,966,747,127.42
  5. Step 5: Solve for x
    x = 251,966,747,127.42/491,243.40
  6. Step 6: Final answer
    x = 512,916.30

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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.