Home / 431,969,679.20-647,954,518.80-345,876,237.20

Finding the Fourth Proportional to 431,969,679.20, 647,954,518.80 and 345,876,237.20

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Solution

The fourth proportional to 431,969,679.20, 647,954,518.80 and 345,876,237.20 is: 518,814,355.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,969,679.20 : 647,954,518.80 = 345,876,237.20 : x
  2. Step 2: Convert to fraction form
    431,969,679.20/647,954,518.80 = 345,876,237.20/x
  3. Step 3: Cross multiply
    431,969,679.20x = 647,954,518.80 × 345,876,237.20
  4. Step 4: Simplify right side
    431,969,679.20x = 224,112,070,839,280,640
  5. Step 5: Solve for x
    x = 224,112,070,839,280,640/431,969,679.20
  6. Step 6: Final answer
    x = 518,814,355.80

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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.