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Finding the Fourth Proportional to 617,268.48, 851,863.59 and 345,320.15

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Solution

The fourth proportional to 617,268.48, 851,863.59 and 345,320.15 is: 476,560.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,268.48 : 851,863.59 = 345,320.15 : x
  2. Step 2: Convert to fraction form
    617,268.48/851,863.59 = 345,320.15/x
  3. Step 3: Cross multiply
    617,268.48x = 851,863.59 × 345,320.15
  4. Step 4: Simplify right side
    617,268.48x = 294,165,664,808.00
  5. Step 5: Solve for x
    x = 294,165,664,808.00/617,268.48
  6. Step 6: Final answer
    x = 476,560.32

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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.