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Finding the Fourth Proportional to 648,401.60, 970,269.60 and 438,449.60

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Solution

The fourth proportional to 648,401.60, 970,269.60 and 438,449.60 is: 656,096.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,401.60 : 970,269.60 = 438,449.60 : x
  2. Step 2: Convert to fraction form
    648,401.60/970,269.60 = 438,449.60/x
  3. Step 3: Cross multiply
    648,401.60x = 970,269.60 × 438,449.60
  4. Step 4: Simplify right side
    648,401.60x = 425,414,318,012.16
  5. Step 5: Solve for x
    x = 425,414,318,012.16/648,401.60
  6. Step 6: Final answer
    x = 656,096.96

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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.