Home / 386,010,031.20-579,099,027.60-127,181,205.60

Finding the Fourth Proportional to 386,010,031.20, 579,099,027.60 and 127,181,205.60

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Solution

The fourth proportional to 386,010,031.20, 579,099,027.60 and 127,181,205.60 is: 190,799,478.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,010,031.20 : 579,099,027.60 = 127,181,205.60 : x
  2. Step 2: Convert to fraction form
    386,010,031.20/579,099,027.60 = 127,181,205.60/x
  3. Step 3: Cross multiply
    386,010,031.20x = 579,099,027.60 × 127,181,205.60
  4. Step 4: Simplify right side
    386,010,031.20x = 73,650,512,491,955,680
  5. Step 5: Solve for x
    x = 73,650,512,491,955,680/386,010,031.20
  6. Step 6: Final answer
    x = 190,799,478.09

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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.