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Finding the Fourth Proportional to 628,882.72, 867,839.20 and 349,478.96

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Solution

The fourth proportional to 628,882.72, 867,839.20 and 349,478.96 is: 482,270.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,882.72 : 867,839.20 = 349,478.96 : x
  2. Step 2: Convert to fraction form
    628,882.72/867,839.20 = 349,478.96/x
  3. Step 3: Cross multiply
    628,882.72x = 867,839.20 × 349,478.96
  4. Step 4: Simplify right side
    628,882.72x = 303,291,540,731.93
  5. Step 5: Solve for x
    x = 303,291,540,731.93/628,882.72
  6. Step 6: Final answer
    x = 482,270.43

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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.