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Finding the Fourth Proportional to 663,963.80, 994,757.70 and 403,827.80

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Solution

The fourth proportional to 663,963.80, 994,757.70 and 403,827.80 is: 605,019.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,963.80 : 994,757.70 = 403,827.80 : x
  2. Step 2: Convert to fraction form
    663,963.80/994,757.70 = 403,827.80/x
  3. Step 3: Cross multiply
    663,963.80x = 994,757.70 × 403,827.80
  4. Step 4: Simplify right side
    663,963.80x = 401,710,813,524.06
  5. Step 5: Solve for x
    x = 401,710,813,524.06/663,963.80
  6. Step 6: Final answer
    x = 605,019.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.