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Finding the Fourth Proportional to 649,662.40, 974,493.60 and 492,198.40

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Solution

The fourth proportional to 649,662.40, 974,493.60 and 492,198.40 is: 738,297.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,662.40 : 974,493.60 = 492,198.40 : x
  2. Step 2: Convert to fraction form
    649,662.40/974,493.60 = 492,198.40/x
  3. Step 3: Cross multiply
    649,662.40x = 974,493.60 × 492,198.40
  4. Step 4: Simplify right side
    649,662.40x = 479,644,190,730.24
  5. Step 5: Solve for x
    x = 479,644,190,730.24/649,662.40
  6. Step 6: Final answer
    x = 738,297.60

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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.