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Finding the Fourth Proportional to 491,979.60, 736,932.60 and 409,035.60

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Solution

The fourth proportional to 491,979.60, 736,932.60 and 409,035.60 is: 612,691.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,979.60 : 736,932.60 = 409,035.60 : x
  2. Step 2: Convert to fraction form
    491,979.60/736,932.60 = 409,035.60/x
  3. Step 3: Cross multiply
    491,979.60x = 736,932.60 × 409,035.60
  4. Step 4: Simplify right side
    491,979.60x = 301,431,668,200.56
  5. Step 5: Solve for x
    x = 301,431,668,200.56/491,979.60
  6. Step 6: Final answer
    x = 612,691.40

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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.