Home / 818,723.80-1,228,085.70-781,982.20

Finding the Fourth Proportional to 818,723.80, 1,228,085.70 and 781,982.20

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Solution

The fourth proportional to 818,723.80, 1,228,085.70 and 781,982.20 is: 1,172,973.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,723.80 : 1,228,085.70 = 781,982.20 : x
  2. Step 2: Convert to fraction form
    818,723.80/1,228,085.70 = 781,982.20/x
  3. Step 3: Cross multiply
    818,723.80x = 1,228,085.70 × 781,982.20
  4. Step 4: Simplify right side
    818,723.80x = 960,341,157,474.54
  5. Step 5: Solve for x
    x = 960,341,157,474.54/818,723.80
  6. Step 6: Final answer
    x = 1,172,973.30

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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.