Home / 725,138.40-1,087,707.60-441,703.20

Finding the Fourth Proportional to 725,138.40, 1,087,707.60 and 441,703.20

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Solution

The fourth proportional to 725,138.40, 1,087,707.60 and 441,703.20 is: 662,554.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,138.40 : 1,087,707.60 = 441,703.20 : x
  2. Step 2: Convert to fraction form
    725,138.40/1,087,707.60 = 441,703.20/x
  3. Step 3: Cross multiply
    725,138.40x = 1,087,707.60 × 441,703.20
  4. Step 4: Simplify right side
    725,138.40x = 480,443,927,584.32
  5. Step 5: Solve for x
    x = 480,443,927,584.32/725,138.40
  6. Step 6: Final answer
    x = 662,554.80

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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.