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Finding the Fourth Proportional to 543,436.76, 815,154.60 and 356,404.52

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Solution

The fourth proportional to 543,436.76, 815,154.60 and 356,404.52 is: 534,606.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,436.76 : 815,154.60 = 356,404.52 : x
  2. Step 2: Convert to fraction form
    543,436.76/815,154.60 = 356,404.52/x
  3. Step 3: Cross multiply
    543,436.76x = 815,154.60 × 356,404.52
  4. Step 4: Simplify right side
    543,436.76x = 290,524,783,938.79
  5. Step 5: Solve for x
    x = 290,524,783,938.79/543,436.76
  6. Step 6: Final answer
    x = 534,606.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.