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Finding the Fourth Proportional to 681,147.42, 940,012.60 and 379,341.42

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Solution

The fourth proportional to 681,147.42, 940,012.60 and 379,341.42 is: 523,507.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,147.42 : 940,012.60 = 379,341.42 : x
  2. Step 2: Convert to fraction form
    681,147.42/940,012.60 = 379,341.42/x
  3. Step 3: Cross multiply
    681,147.42x = 940,012.60 × 379,341.42
  4. Step 4: Simplify right side
    681,147.42x = 356,585,717,094.23
  5. Step 5: Solve for x
    x = 356,585,717,094.23/681,147.42
  6. Step 6: Final answer
    x = 523,507.40

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Double scale
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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.