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Finding the Fourth Proportional to 538,723.57, 743,472.03 and 297,005.78

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Solution

The fourth proportional to 538,723.57, 743,472.03 and 297,005.78 is: 409,886.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,723.57 : 743,472.03 = 297,005.78 : x
  2. Step 2: Convert to fraction form
    538,723.57/743,472.03 = 297,005.78/x
  3. Step 3: Cross multiply
    538,723.57x = 743,472.03 × 297,005.78
  4. Step 4: Simplify right side
    538,723.57x = 220,815,490,178.33
  5. Step 5: Solve for x
    x = 220,815,490,178.33/538,723.57
  6. Step 6: Final answer
    x = 409,886.45

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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.