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Finding the Fourth Proportional to 656,208.60, 984,312.90 and 324,432.60

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Solution

The fourth proportional to 656,208.60, 984,312.90 and 324,432.60 is: 486,648.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,208.60 : 984,312.90 = 324,432.60 : x
  2. Step 2: Convert to fraction form
    656,208.60/984,312.90 = 324,432.60/x
  3. Step 3: Cross multiply
    656,208.60x = 984,312.90 × 324,432.60
  4. Step 4: Simplify right side
    656,208.60x = 319,343,193,360.54
  5. Step 5: Solve for x
    x = 319,343,193,360.54/656,208.60
  6. Step 6: Final answer
    x = 486,648.90

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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.