Home / 8,221,821.20-12,332,117.40-3,428,272.40

Finding the Fourth Proportional to 8,221,821.20, 12,332,117.40 and 3,428,272.40

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Solution

The fourth proportional to 8,221,821.20, 12,332,117.40 and 3,428,272.40 is: 5,142,152.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,221,821.20 : 12,332,117.40 = 3,428,272.40 : x
  2. Step 2: Convert to fraction form
    8,221,821.20/12,332,117.40 = 3,428,272.40/x
  3. Step 3: Cross multiply
    8,221,821.20x = 12,332,117.40 × 3,428,272.40
  4. Step 4: Simplify right side
    8,221,821.20x = 42,277,857,715,979.76
  5. Step 5: Solve for x
    x = 42,277,857,715,979.76/8,221,821.20
  6. Step 6: Final answer
    x = 5,142,152.41

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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.