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Finding the Fourth Proportional to 543,992.34, 810,520.95 and 513,433.88

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Solution

The fourth proportional to 543,992.34, 810,520.95 and 513,433.88 is: 764,990.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,992.34 : 810,520.95 = 513,433.88 : x
  2. Step 2: Convert to fraction form
    543,992.34/810,520.95 = 513,433.88/x
  3. Step 3: Cross multiply
    543,992.34x = 810,520.95 × 513,433.88
  4. Step 4: Simplify right side
    543,992.34x = 416,148,916,179.79
  5. Step 5: Solve for x
    x = 416,148,916,179.79/543,992.34
  6. Step 6: Final answer
    x = 764,990.40

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.