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Finding the Fourth Proportional to 617,268.73, 851,863.93 and 345,320.40

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Solution

The fourth proportional to 617,268.73, 851,863.93 and 345,320.40 is: 476,560.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,268.73 : 851,863.93 = 345,320.40 : x
  2. Step 2: Convert to fraction form
    617,268.73/851,863.93 = 345,320.40/x
  3. Step 3: Cross multiply
    617,268.73x = 851,863.93 × 345,320.40
  4. Step 4: Simplify right side
    617,268.73x = 294,165,993,053.17
  5. Step 5: Solve for x
    x = 294,165,993,053.17/617,268.73
  6. Step 6: Final answer
    x = 476,560.66

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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.