Home / 724,481.60-1,086,722.40-425,105.60

Finding the Fourth Proportional to 724,481.60, 1,086,722.40 and 425,105.60

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Solution

The fourth proportional to 724,481.60, 1,086,722.40 and 425,105.60 is: 637,658.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,481.60 : 1,086,722.40 = 425,105.60 : x
  2. Step 2: Convert to fraction form
    724,481.60/1,086,722.40 = 425,105.60/x
  3. Step 3: Cross multiply
    724,481.60x = 1,086,722.40 × 425,105.60
  4. Step 4: Simplify right side
    724,481.60x = 461,971,777,885.44
  5. Step 5: Solve for x
    x = 461,971,777,885.44/724,481.60
  6. Step 6: Final answer
    x = 637,658.40

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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.