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Finding the Fourth Proportional to 664,328.80, 996,493.20 and 451,752.40

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Solution

The fourth proportional to 664,328.80, 996,493.20 and 451,752.40 is: 677,628.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,328.80 : 996,493.20 = 451,752.40 : x
  2. Step 2: Convert to fraction form
    664,328.80/996,493.20 = 451,752.40/x
  3. Step 3: Cross multiply
    664,328.80x = 996,493.20 × 451,752.40
  4. Step 4: Simplify right side
    664,328.80x = 450,168,194,683.68
  5. Step 5: Solve for x
    x = 450,168,194,683.68/664,328.80
  6. Step 6: Final answer
    x = 677,628.60

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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.