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Finding the Fourth Proportional to 437,551.80, 656,586.90 and 318,924.60

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Solution

The fourth proportional to 437,551.80, 656,586.90 and 318,924.60 is: 478,575.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,551.80 : 656,586.90 = 318,924.60 : x
  2. Step 2: Convert to fraction form
    437,551.80/656,586.90 = 318,924.60/x
  3. Step 3: Cross multiply
    437,551.80x = 656,586.90 × 318,924.60
  4. Step 4: Simplify right side
    437,551.80x = 209,401,714,447.74
  5. Step 5: Solve for x
    x = 209,401,714,447.74/437,551.80
  6. Step 6: Final answer
    x = 478,575.83

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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.