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Finding the Fourth Proportional to 492,711.78, 679,952.14 and 277,810.26

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Solution

The fourth proportional to 492,711.78, 679,952.14 and 277,810.26 is: 383,383.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,711.78 : 679,952.14 = 277,810.26 : x
  2. Step 2: Convert to fraction form
    492,711.78/679,952.14 = 277,810.26/x
  3. Step 3: Cross multiply
    492,711.78x = 679,952.14 × 277,810.26
  4. Step 4: Simplify right side
    492,711.78x = 188,897,680,800.96
  5. Step 5: Solve for x
    x = 188,897,680,800.96/492,711.78
  6. Step 6: Final answer
    x = 383,383.73

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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.