Home / 1,332,031.20-1,998,046.80-1,221,806.40

Finding the Fourth Proportional to 1,332,031.20, 1,998,046.80 and 1,221,806.40

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Solution

The fourth proportional to 1,332,031.20, 1,998,046.80 and 1,221,806.40 is: 1,832,709.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,332,031.20 : 1,998,046.80 = 1,221,806.40 : x
  2. Step 2: Convert to fraction form
    1,332,031.20/1,998,046.80 = 1,221,806.40/x
  3. Step 3: Cross multiply
    1,332,031.20x = 1,998,046.80 × 1,221,806.40
  4. Step 4: Simplify right side
    1,332,031.20x = 2,441,226,367,739.52
  5. Step 5: Solve for x
    x = 2,441,226,367,739.52/1,332,031.20
  6. Step 6: Final answer
    x = 1,832,709.60

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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.