Home / 431,569,297.35-646,928,793.23-213,253,334.55

Finding the Fourth Proportional to 431,569,297.35, 646,928,793.23 and 213,253,334.55

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Solution

The fourth proportional to 431,569,297.35, 646,928,793.23 and 213,253,334.55 is: 319,669,919.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,569,297.35 : 646,928,793.23 = 213,253,334.55 : x
  2. Step 2: Convert to fraction form
    431,569,297.35/646,928,793.23 = 213,253,334.55/x
  3. Step 3: Cross multiply
    431,569,297.35x = 646,928,793.23 × 213,253,334.55
  4. Step 4: Simplify right side
    431,569,297.35x = 137,959,722,371,638,704
  5. Step 5: Solve for x
    x = 137,959,722,371,638,704/431,569,297.35
  6. Step 6: Final answer
    x = 319,669,919.10

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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.