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Finding the Fourth Proportional to 631,213.36, 871,080 and 359,298.76

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Solution

The fourth proportional to 631,213.36, 871,080 and 359,298.76 is: 495,835.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,213.36 : 871,080 = 359,298.76 : x
  2. Step 2: Convert to fraction form
    631,213.36/871,080 = 359,298.76/x
  3. Step 3: Cross multiply
    631,213.36x = 871,080 × 359,298.76
  4. Step 4: Simplify right side
    631,213.36x = 312,977,963,860.80
  5. Step 5: Solve for x
    x = 312,977,963,860.80/631,213.36
  6. Step 6: Final answer
    x = 495,835.46

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.