Home / 725,114.40-1,086,359.40-620,138.40

Finding the Fourth Proportional to 725,114.40, 1,086,359.40 and 620,138.40

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Solution

The fourth proportional to 725,114.40, 1,086,359.40 and 620,138.40 is: 929,085.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,114.40 : 1,086,359.40 = 620,138.40 : x
  2. Step 2: Convert to fraction form
    725,114.40/1,086,359.40 = 620,138.40/x
  3. Step 3: Cross multiply
    725,114.40x = 1,086,359.40 × 620,138.40
  4. Step 4: Simplify right side
    725,114.40x = 673,693,180,140.96
  5. Step 5: Solve for x
    x = 673,693,180,140.96/725,114.40
  6. Step 6: Final answer
    x = 929,085.37

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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.