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Finding the Fourth Proportional to 631,243.83, 871,103.01 and 344,765.07

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Solution

The fourth proportional to 631,243.83, 871,103.01 and 344,765.07 is: 475,768.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,243.83 : 871,103.01 = 344,765.07 : x
  2. Step 2: Convert to fraction form
    631,243.83/871,103.01 = 344,765.07/x
  3. Step 3: Cross multiply
    631,243.83x = 871,103.01 × 344,765.07
  4. Step 4: Simplify right side
    631,243.83x = 300,325,890,219.86
  5. Step 5: Solve for x
    x = 300,325,890,219.86/631,243.83
  6. Step 6: Final answer
    x = 475,768.44

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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.