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Finding the Fourth Proportional to 664,280.10, 996,420.15 and 451,703.70

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Solution

The fourth proportional to 664,280.10, 996,420.15 and 451,703.70 is: 677,555.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,280.10 : 996,420.15 = 451,703.70 : x
  2. Step 2: Convert to fraction form
    664,280.10/996,420.15 = 451,703.70/x
  3. Step 3: Cross multiply
    664,280.10x = 996,420.15 × 451,703.70
  4. Step 4: Simplify right side
    664,280.10x = 450,086,668,509.56
  5. Step 5: Solve for x
    x = 450,086,668,509.56/664,280.10
  6. Step 6: Final answer
    x = 677,555.55

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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.