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Finding the Fourth Proportional to 862,204.43, 1,189,842.43 and 499,838.34

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Solution

The fourth proportional to 862,204.43, 1,189,842.43 and 499,838.34 is: 689,777.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,204.43 : 1,189,842.43 = 499,838.34 : x
  2. Step 2: Convert to fraction form
    862,204.43/1,189,842.43 = 499,838.34/x
  3. Step 3: Cross multiply
    862,204.43x = 1,189,842.43 × 499,838.34
  4. Step 4: Simplify right side
    862,204.43x = 594,728,865,072.77
  5. Step 5: Solve for x
    x = 594,728,865,072.77/862,204.43
  6. Step 6: Final answer
    x = 689,777.09

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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.