Home / 815,740.20-1,223,610.30-697,642.20

Finding the Fourth Proportional to 815,740.20, 1,223,610.30 and 697,642.20

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Solution

The fourth proportional to 815,740.20, 1,223,610.30 and 697,642.20 is: 1,046,463.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,740.20 : 1,223,610.30 = 697,642.20 : x
  2. Step 2: Convert to fraction form
    815,740.20/1,223,610.30 = 697,642.20/x
  3. Step 3: Cross multiply
    815,740.20x = 1,223,610.30 × 697,642.20
  4. Step 4: Simplify right side
    815,740.20x = 853,642,181,634.66
  5. Step 5: Solve for x
    x = 853,642,181,634.66/815,740.20
  6. Step 6: Final answer
    x = 1,046,463.30

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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.