Home / 724,687.60-1,087,031.40-455,249.20

Finding the Fourth Proportional to 724,687.60, 1,087,031.40 and 455,249.20

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Solution

The fourth proportional to 724,687.60, 1,087,031.40 and 455,249.20 is: 682,873.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,687.60 : 1,087,031.40 = 455,249.20 : x
  2. Step 2: Convert to fraction form
    724,687.60/1,087,031.40 = 455,249.20/x
  3. Step 3: Cross multiply
    724,687.60x = 1,087,031.40 × 455,249.20
  4. Step 4: Simplify right side
    724,687.60x = 494,870,175,224.88
  5. Step 5: Solve for x
    x = 494,870,175,224.88/724,687.60
  6. Step 6: Final answer
    x = 682,873.80

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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.