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Finding the Fourth Proportional to 631,222.48, 871,092.60 and 359,307.88

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Solution

The fourth proportional to 631,222.48, 871,092.60 and 359,307.88 is: 495,848.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,222.48 : 871,092.60 = 359,307.88 : x
  2. Step 2: Convert to fraction form
    631,222.48/871,092.60 = 359,307.88/x
  3. Step 3: Cross multiply
    631,222.48x = 871,092.60 × 359,307.88
  4. Step 4: Simplify right side
    631,222.48x = 312,990,435,389.69
  5. Step 5: Solve for x
    x = 312,990,435,389.69/631,222.48
  6. Step 6: Final answer
    x = 495,848.05

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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.