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Finding the Fourth Proportional to 681,147.22, 940,012.32 and 379,341.22

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Solution

The fourth proportional to 681,147.22, 940,012.32 and 379,341.22 is: 523,507.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,147.22 : 940,012.32 = 379,341.22 : x
  2. Step 2: Convert to fraction form
    681,147.22/940,012.32 = 379,341.22/x
  3. Step 3: Cross multiply
    681,147.22x = 940,012.32 × 379,341.22
  4. Step 4: Simplify right side
    681,147.22x = 356,585,420,283.83
  5. Step 5: Solve for x
    x = 356,585,420,283.83/681,147.22
  6. Step 6: Final answer
    x = 523,507.12

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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.