Home / 408,680,540.91-612,522,785.88-211,835,431.58

Finding the Fourth Proportional to 408,680,540.91, 612,522,785.88 and 211,835,431.58

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Solution

The fourth proportional to 408,680,540.91, 612,522,785.88 and 211,835,431.58 is: 317,495,000.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,680,540.91 : 612,522,785.88 = 211,835,431.58 : x
  2. Step 2: Convert to fraction form
    408,680,540.91/612,522,785.88 = 211,835,431.58/x
  3. Step 3: Cross multiply
    408,680,540.91x = 612,522,785.88 × 211,835,431.58
  4. Step 4: Simplify right side
    408,680,540.91x = 129,754,028,696,411,104
  5. Step 5: Solve for x
    x = 129,754,028,696,411,104/408,680,540.91
  6. Step 6: Final answer
    x = 317,495,000.88

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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.