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Finding the Fourth Proportional to 617,325, 851,941.59 and 345,376.68

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Solution

The fourth proportional to 617,325, 851,941.59 and 345,376.68 is: 476,638.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,325 : 851,941.59 = 345,376.68 : x
  2. Step 2: Convert to fraction form
    617,325/851,941.59 = 345,376.68/x
  3. Step 3: Cross multiply
    617,325x = 851,941.59 × 345,376.68
  4. Step 4: Simplify right side
    617,325x = 294,240,757,908.12
  5. Step 5: Solve for x
    x = 294,240,757,908.12/617,325
  6. Step 6: Final answer
    x = 476,638.33

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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.