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Finding the Fourth Proportional to 656,321.40, 984,482.10 and 498,857.40

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Solution

The fourth proportional to 656,321.40, 984,482.10 and 498,857.40 is: 748,286.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,321.40 : 984,482.10 = 498,857.40 : x
  2. Step 2: Convert to fraction form
    656,321.40/984,482.10 = 498,857.40/x
  3. Step 3: Cross multiply
    656,321.40x = 984,482.10 × 498,857.40
  4. Step 4: Simplify right side
    656,321.40x = 491,116,180,752.54
  5. Step 5: Solve for x
    x = 491,116,180,752.54/656,321.40
  6. Step 6: Final answer
    x = 748,286.10

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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.