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Finding the Fourth Proportional to 631,222.32, 871,091.64 and 344,737.20

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Solution

The fourth proportional to 631,222.32, 871,091.64 and 344,737.20 is: 475,739.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,222.32 : 871,091.64 = 344,737.20 : x
  2. Step 2: Convert to fraction form
    631,222.32/871,091.64 = 344,737.20/x
  3. Step 3: Cross multiply
    631,222.32x = 871,091.64 × 344,737.20
  4. Step 4: Simplify right side
    631,222.32x = 300,297,692,917.01
  5. Step 5: Solve for x
    x = 300,297,692,917.01/631,222.32
  6. Step 6: Final answer
    x = 475,739.98

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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.