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Finding the Fourth Proportional to 631,930.38, 872,063.99 and 345,452.55

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Solution

The fourth proportional to 631,930.38, 872,063.99 and 345,452.55 is: 476,724.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,930.38 : 872,063.99 = 345,452.55 : x
  2. Step 2: Convert to fraction form
    631,930.38/872,063.99 = 345,452.55/x
  3. Step 3: Cross multiply
    631,930.38x = 872,063.99 × 345,452.55
  4. Step 4: Simplify right side
    631,930.38x = 301,256,729,108.68
  5. Step 5: Solve for x
    x = 301,256,729,108.68/631,930.38
  6. Step 6: Final answer
    x = 476,724.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.