Home / 680,992,891.20-1,021,622,047.20-271,979,438.40

Finding the Fourth Proportional to 680,992,891.20, 1,021,622,047.20 and 271,979,438.40

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Solution

The fourth proportional to 680,992,891.20, 1,021,622,047.20 and 271,979,438.40 is: 408,022,160.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,992,891.20 : 1,021,622,047.20 = 271,979,438.40 : x
  2. Step 2: Convert to fraction form
    680,992,891.20/1,021,622,047.20 = 271,979,438.40/x
  3. Step 3: Cross multiply
    680,992,891.20x = 1,021,622,047.20 × 271,979,438.40
  4. Step 4: Simplify right side
    680,992,891.20x = 277,860,190,654,514,272
  5. Step 5: Solve for x
    x = 277,860,190,654,514,272/680,992,891.20
  6. Step 6: Final answer
    x = 408,022,160.36

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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.