Home / 725,309.40-1,086,855.30-487,772.76

Finding the Fourth Proportional to 725,309.40, 1,086,855.30 and 487,772.76

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Solution

The fourth proportional to 725,309.40, 1,086,855.30 and 487,772.76 is: 730,913.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,309.40 : 1,086,855.30 = 487,772.76 : x
  2. Step 2: Convert to fraction form
    725,309.40/1,086,855.30 = 487,772.76/x
  3. Step 3: Cross multiply
    725,309.40x = 1,086,855.30 × 487,772.76
  4. Step 4: Simplify right side
    725,309.40x = 530,138,409,401.63
  5. Step 5: Solve for x
    x = 530,138,409,401.63/725,309.40
  6. Step 6: Final answer
    x = 730,913.47

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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.