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Finding the Fourth Proportional to 873,791.40, 1,310,687.10 and 341,329.80

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Solution

The fourth proportional to 873,791.40, 1,310,687.10 and 341,329.80 is: 511,994.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,791.40 : 1,310,687.10 = 341,329.80 : x
  2. Step 2: Convert to fraction form
    873,791.40/1,310,687.10 = 341,329.80/x
  3. Step 3: Cross multiply
    873,791.40x = 1,310,687.10 × 341,329.80
  4. Step 4: Simplify right side
    873,791.40x = 447,376,565,705.58
  5. Step 5: Solve for x
    x = 447,376,565,705.58/873,791.40
  6. Step 6: Final answer
    x = 511,994.70

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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.