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Finding the Fourth Proportional to 506,192.70, 698,490.62 and 279,794.46

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Solution

The fourth proportional to 506,192.70, 698,490.62 and 279,794.46 is: 386,085.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,192.70 : 698,490.62 = 279,794.46 : x
  2. Step 2: Convert to fraction form
    506,192.70/698,490.62 = 279,794.46/x
  3. Step 3: Cross multiply
    506,192.70x = 698,490.62 × 279,794.46
  4. Step 4: Simplify right side
    506,192.70x = 195,433,805,837.97
  5. Step 5: Solve for x
    x = 195,433,805,837.97/506,192.70
  6. Step 6: Final answer
    x = 386,085.78

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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.