Home / 387,102,511.20-580,653,766.80-171,691,759.20

Finding the Fourth Proportional to 387,102,511.20, 580,653,766.80 and 171,691,759.20

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Solution

The fourth proportional to 387,102,511.20, 580,653,766.80 and 171,691,759.20 is: 257,537,638.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,102,511.20 : 580,653,766.80 = 171,691,759.20 : x
  2. Step 2: Convert to fraction form
    387,102,511.20/580,653,766.80 = 171,691,759.20/x
  3. Step 3: Cross multiply
    387,102,511.20x = 580,653,766.80 × 171,691,759.20
  4. Step 4: Simplify right side
    387,102,511.20x = 99,693,466,707,998,544
  5. Step 5: Solve for x
    x = 99,693,466,707,998,544/387,102,511.20
  6. Step 6: Final answer
    x = 257,537,638.80

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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.