Home / 725,093.60-1,087,640.40-457,404.80

Finding the Fourth Proportional to 725,093.60, 1,087,640.40 and 457,404.80

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Solution

The fourth proportional to 725,093.60, 1,087,640.40 and 457,404.80 is: 686,107.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,093.60 : 1,087,640.40 = 457,404.80 : x
  2. Step 2: Convert to fraction form
    725,093.60/1,087,640.40 = 457,404.80/x
  3. Step 3: Cross multiply
    725,093.60x = 1,087,640.40 × 457,404.80
  4. Step 4: Simplify right side
    725,093.60x = 497,491,939,633.92
  5. Step 5: Solve for x
    x = 497,491,939,633.92/725,093.60
  6. Step 6: Final answer
    x = 686,107.20

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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.