Home / 6,405,819.12-8,839,766.88-3,828,920.76

Finding the Fourth Proportional to 6,405,819.12, 8,839,766.88 and 3,828,920.76

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Solution

The fourth proportional to 6,405,819.12, 8,839,766.88 and 3,828,920.76 is: 5,283,753.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,405,819.12 : 8,839,766.88 = 3,828,920.76 : x
  2. Step 2: Convert to fraction form
    6,405,819.12/8,839,766.88 = 3,828,920.76/x
  3. Step 3: Cross multiply
    6,405,819.12x = 8,839,766.88 × 3,828,920.76
  4. Step 4: Simplify right side
    6,405,819.12x = 33,846,766,920,392.43
  5. Step 5: Solve for x
    x = 33,846,766,920,392.43/6,405,819.12
  6. Step 6: Final answer
    x = 5,283,753.14

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.