Home / 8,221,817.20-12,332,111.40-3,428,268.40

Finding the Fourth Proportional to 8,221,817.20, 12,332,111.40 and 3,428,268.40

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Solution

The fourth proportional to 8,221,817.20, 12,332,111.40 and 3,428,268.40 is: 5,142,146.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,221,817.20 : 12,332,111.40 = 3,428,268.40 : x
  2. Step 2: Convert to fraction form
    8,221,817.20/12,332,111.40 = 3,428,268.40/x
  3. Step 3: Cross multiply
    8,221,817.20x = 12,332,111.40 × 3,428,268.40
  4. Step 4: Simplify right side
    8,221,817.20x = 42,277,787,817,899.76
  5. Step 5: Solve for x
    x = 42,277,787,817,899.76/8,221,817.20
  6. Step 6: Final answer
    x = 5,142,146.41

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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.