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Finding the Fourth Proportional to 631,325, 871,223.34 and 344,845.16

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Solution

The fourth proportional to 631,325, 871,223.34 and 344,845.16 is: 475,883.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,325 : 871,223.34 = 344,845.16 : x
  2. Step 2: Convert to fraction form
    631,325/871,223.34 = 344,845.16/x
  3. Step 3: Cross multiply
    631,325x = 871,223.34 × 344,845.16
  4. Step 4: Simplify right side
    631,325x = 300,437,152,078.03
  5. Step 5: Solve for x
    x = 300,437,152,078.03/631,325
  6. Step 6: Final answer
    x = 475,883.50

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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.