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Finding the Fourth Proportional to 664,292.80, 996,439.20 and 451,716.40

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Solution

The fourth proportional to 664,292.80, 996,439.20 and 451,716.40 is: 677,574.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,292.80 : 996,439.20 = 451,716.40 : x
  2. Step 2: Convert to fraction form
    664,292.80/996,439.20 = 451,716.40/x
  3. Step 3: Cross multiply
    664,292.80x = 996,439.20 × 451,716.40
  4. Step 4: Simplify right side
    664,292.80x = 450,107,928,242.88
  5. Step 5: Solve for x
    x = 450,107,928,242.88/664,292.80
  6. Step 6: Final answer
    x = 677,574.60

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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.