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Finding the Fourth Proportional to 631,351.91, 871,233.15 and 344,816.63

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Solution

The fourth proportional to 631,351.91, 871,233.15 and 344,816.63 is: 475,829.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,351.91 : 871,233.15 = 344,816.63 : x
  2. Step 2: Convert to fraction form
    631,351.91/871,233.15 = 344,816.63/x
  3. Step 3: Cross multiply
    631,351.91x = 871,233.15 × 344,816.63
  4. Step 4: Simplify right side
    631,351.91x = 300,415,678,727.29
  5. Step 5: Solve for x
    x = 300,415,678,727.29/631,351.91
  6. Step 6: Final answer
    x = 475,829.21

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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.