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Finding the Fourth Proportional to 626,771.44, 864,959.16 and 372,123.28

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Solution

The fourth proportional to 626,771.44, 864,959.16 and 372,123.28 is: 513,538.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,771.44 : 864,959.16 = 372,123.28 : x
  2. Step 2: Convert to fraction form
    626,771.44/864,959.16 = 372,123.28/x
  3. Step 3: Cross multiply
    626,771.44x = 864,959.16 × 372,123.28
  4. Step 4: Simplify right side
    626,771.44x = 321,871,439,685.25
  5. Step 5: Solve for x
    x = 321,871,439,685.25/626,771.44
  6. Step 6: Final answer
    x = 513,538.78

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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.