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Finding the Fourth Proportional to 631,240, 871,137.12 and 362,968

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Solution

The fourth proportional to 631,240, 871,137.12 and 362,968 is: 500,910.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,240 : 871,137.12 = 362,968 : x
  2. Step 2: Convert to fraction form
    631,240/871,137.12 = 362,968/x
  3. Step 3: Cross multiply
    631,240x = 871,137.12 × 362,968
  4. Step 4: Simplify right side
    631,240x = 316,194,898,172.16
  5. Step 5: Solve for x
    x = 316,194,898,172.16/631,240
  6. Step 6: Final answer
    x = 500,910.74

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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.