Home / 815,200.20-1,221,324.08-697,102.20

Finding the Fourth Proportional to 815,200.20, 1,221,324.08 and 697,102.20

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Solution

The fourth proportional to 815,200.20, 1,221,324.08 and 697,102.20 is: 1,044,390.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,200.20 : 1,221,324.08 = 697,102.20 : x
  2. Step 2: Convert to fraction form
    815,200.20/1,221,324.08 = 697,102.20/x
  3. Step 3: Cross multiply
    815,200.20x = 1,221,324.08 × 697,102.20
  4. Step 4: Simplify right side
    815,200.20x = 851,387,699,595.47
  5. Step 5: Solve for x
    x = 851,387,699,595.47/815,200.20
  6. Step 6: Final answer
    x = 1,044,390.94

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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.