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Finding the Fourth Proportional to 627,198.40, 940,106.40 and 346,916.80

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Solution

The fourth proportional to 627,198.40, 940,106.40 and 346,916.80 is: 519,992.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,198.40 : 940,106.40 = 346,916.80 : x
  2. Step 2: Convert to fraction form
    627,198.40/940,106.40 = 346,916.80/x
  3. Step 3: Cross multiply
    627,198.40x = 940,106.40 × 346,916.80
  4. Step 4: Simplify right side
    627,198.40x = 326,138,703,947.52
  5. Step 5: Solve for x
    x = 326,138,703,947.52/627,198.40
  6. Step 6: Final answer
    x = 519,992.88

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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.