Home / 815,713.20-1,223,569.80-694,990.80

Finding the Fourth Proportional to 815,713.20, 1,223,569.80 and 694,990.80

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Solution

The fourth proportional to 815,713.20, 1,223,569.80 and 694,990.80 is: 1,042,486.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,713.20 : 1,223,569.80 = 694,990.80 : x
  2. Step 2: Convert to fraction form
    815,713.20/1,223,569.80 = 694,990.80/x
  3. Step 3: Cross multiply
    815,713.20x = 1,223,569.80 × 694,990.80
  4. Step 4: Simplify right side
    815,713.20x = 850,369,754,157.84
  5. Step 5: Solve for x
    x = 850,369,754,157.84/815,713.20
  6. Step 6: Final answer
    x = 1,042,486.20

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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.