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Finding the Fourth Proportional to 492,539.40, 679,695.30 and 277,679.70

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Solution

The fourth proportional to 492,539.40, 679,695.30 and 277,679.70 is: 383,192.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,539.40 : 679,695.30 = 277,679.70 : x
  2. Step 2: Convert to fraction form
    492,539.40/679,695.30 = 277,679.70/x
  3. Step 3: Cross multiply
    492,539.40x = 679,695.30 × 277,679.70
  4. Step 4: Simplify right side
    492,539.40x = 188,737,586,995.41
  5. Step 5: Solve for x
    x = 188,737,586,995.41/492,539.40
  6. Step 6: Final answer
    x = 383,192.87

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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.