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Finding the Fourth Proportional to 617,320.39, 851,855.64 and 345,338.24

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Solution

The fourth proportional to 617,320.39, 851,855.64 and 345,338.24 is: 476,540.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,320.39 : 851,855.64 = 345,338.24 : x
  2. Step 2: Convert to fraction form
    617,320.39/851,855.64 = 345,338.24/x
  3. Step 3: Cross multiply
    617,320.39x = 851,855.64 × 345,338.24
  4. Step 4: Simplify right side
    617,320.39x = 294,178,321,897.38
  5. Step 5: Solve for x
    x = 294,178,321,897.38/617,320.39
  6. Step 6: Final answer
    x = 476,540.75

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1.5x scale

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.