Home / 814,209.40-1,221,314.10-724,007.80

Finding the Fourth Proportional to 814,209.40, 1,221,314.10 and 724,007.80

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Solution

The fourth proportional to 814,209.40, 1,221,314.10 and 724,007.80 is: 1,086,011.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,209.40 : 1,221,314.10 = 724,007.80 : x
  2. Step 2: Convert to fraction form
    814,209.40/1,221,314.10 = 724,007.80/x
  3. Step 3: Cross multiply
    814,209.40x = 1,221,314.10 × 724,007.80
  4. Step 4: Simplify right side
    814,209.40x = 884,240,934,649.98
  5. Step 5: Solve for x
    x = 884,240,934,649.98/814,209.40
  6. Step 6: Final answer
    x = 1,086,011.70

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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.