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Finding the Fourth Proportional to 631,236, 871,131.60 and 362,964

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Solution

The fourth proportional to 631,236, 871,131.60 and 362,964 is: 500,905.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,236 : 871,131.60 = 362,964 : x
  2. Step 2: Convert to fraction form
    631,236/871,131.60 = 362,964/x
  3. Step 3: Cross multiply
    631,236x = 871,131.60 × 362,964
  4. Step 4: Simplify right side
    631,236x = 316,189,410,062.40
  5. Step 5: Solve for x
    x = 316,189,410,062.40/631,236
  6. Step 6: Final answer
    x = 500,905.22

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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.