Home / 631,408.70-871,333.02-344,921.42

Finding the Fourth Proportional to 631,408.70, 871,333.02 and 344,921.42

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Solution

The fourth proportional to 631,408.70, 871,333.02 and 344,921.42 is: 475,985.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,408.70 : 871,333.02 = 344,921.42 : x
  2. Step 2: Convert to fraction form
    631,408.70/871,333.02 = 344,921.42/x
  3. Step 3: Cross multiply
    631,408.70x = 871,333.02 × 344,921.42
  4. Step 4: Simplify right side
    631,408.70x = 300,541,422,551.29
  5. Step 5: Solve for x
    x = 300,541,422,551.29/631,408.70
  6. Step 6: Final answer
    x = 475,985.56

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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.