Home / 431,389,112.40-647,083,668.60-276,420,916.80

Finding the Fourth Proportional to 431,389,112.40, 647,083,668.60 and 276,420,916.80

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Solution

The fourth proportional to 431,389,112.40, 647,083,668.60 and 276,420,916.80 is: 414,631,375.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,389,112.40 : 647,083,668.60 = 276,420,916.80 : x
  2. Step 2: Convert to fraction form
    431,389,112.40/647,083,668.60 = 276,420,916.80/x
  3. Step 3: Cross multiply
    431,389,112.40x = 647,083,668.60 × 276,420,916.80
  4. Step 4: Simplify right side
    431,389,112.40x = 178,867,460,920,719,392
  5. Step 5: Solve for x
    x = 178,867,460,920,719,392/431,389,112.40
  6. Step 6: Final answer
    x = 414,631,375.20

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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.