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Finding the Fourth Proportional to 492,773.32, 679,976.43 and 363,780.40

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Solution

The fourth proportional to 492,773.32, 679,976.43 and 363,780.40 is: 501,979.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,773.32 : 679,976.43 = 363,780.40 : x
  2. Step 2: Convert to fraction form
    492,773.32/679,976.43 = 363,780.40/x
  3. Step 3: Cross multiply
    492,773.32x = 679,976.43 × 363,780.40
  4. Step 4: Simplify right side
    492,773.32x = 247,362,097,695.97
  5. Step 5: Solve for x
    x = 247,362,097,695.97/492,773.32
  6. Step 6: Final answer
    x = 501,979.49

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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.