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Finding the Fourth Proportional to 631,410.70, 871,335.78 and 344,923.42

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Solution

The fourth proportional to 631,410.70, 871,335.78 and 344,923.42 is: 475,988.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,410.70 : 871,335.78 = 344,923.42 : x
  2. Step 2: Convert to fraction form
    631,410.70/871,335.78 = 344,923.42/x
  3. Step 3: Cross multiply
    631,410.70x = 871,335.78 × 344,923.42
  4. Step 4: Simplify right side
    631,410.70x = 300,544,117,205.97
  5. Step 5: Solve for x
    x = 300,544,117,205.97/631,410.70
  6. Step 6: Final answer
    x = 475,988.32

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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.