Home / 431,793,915.02-647,692,754.72-136,690,478.85

Finding the Fourth Proportional to 431,793,915.02, 647,692,754.72 and 136,690,478.85

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Solution

The fourth proportional to 431,793,915.02, 647,692,754.72 and 136,690,478.85 is: 205,036,314.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,793,915.02 : 647,692,754.72 = 136,690,478.85 : x
  2. Step 2: Convert to fraction form
    431,793,915.02/647,692,754.72 = 136,690,478.85/x
  3. Step 3: Cross multiply
    431,793,915.02x = 647,692,754.72 × 136,690,478.85
  4. Step 4: Simplify right side
    431,793,915.02x = 88,533,432,789,668,944
  5. Step 5: Solve for x
    x = 88,533,432,789,668,944/431,793,915.02
  6. Step 6: Final answer
    x = 205,036,314.11

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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.