Home / 431,137,879.40-646,706,819.10-124,439,997.80

Finding the Fourth Proportional to 431,137,879.40, 646,706,819.10 and 124,439,997.80

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Solution

The fourth proportional to 431,137,879.40, 646,706,819.10 and 124,439,997.80 is: 186,659,996.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,137,879.40 : 646,706,819.10 = 124,439,997.80 : x
  2. Step 2: Convert to fraction form
    431,137,879.40/646,706,819.10 = 124,439,997.80/x
  3. Step 3: Cross multiply
    431,137,879.40x = 646,706,819.10 × 124,439,997.80
  4. Step 4: Simplify right side
    431,137,879.40x = 80,476,195,146,048,992
  5. Step 5: Solve for x
    x = 80,476,195,146,048,992/431,137,879.40
  6. Step 6: Final answer
    x = 186,659,996.70

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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.