Home / 724,890.68-1,000,361.50-398,217.44

Finding the Fourth Proportional to 724,890.68, 1,000,361.50 and 398,217.44

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Solution

The fourth proportional to 724,890.68, 1,000,361.50 and 398,217.44 is: 549,546.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,890.68 : 1,000,361.50 = 398,217.44 : x
  2. Step 2: Convert to fraction form
    724,890.68/1,000,361.50 = 398,217.44/x
  3. Step 3: Cross multiply
    724,890.68x = 1,000,361.50 × 398,217.44
  4. Step 4: Simplify right side
    724,890.68x = 398,361,395,604.56
  5. Step 5: Solve for x
    x = 398,361,395,604.56/724,890.68
  6. Step 6: Final answer
    x = 549,546.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.