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Finding the Fourth Proportional to 617,162.56, 851,644.33 and 345,183.39

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Solution

The fourth proportional to 617,162.56, 851,644.33 and 345,183.39 is: 476,330.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,162.56 : 851,644.33 = 345,183.39 : x
  2. Step 2: Convert to fraction form
    617,162.56/851,644.33 = 345,183.39/x
  3. Step 3: Cross multiply
    617,162.56x = 851,644.33 × 345,183.39
  4. Step 4: Simplify right side
    617,162.56x = 293,973,476,040.72
  5. Step 5: Solve for x
    x = 293,973,476,040.72/617,162.56
  6. Step 6: Final answer
    x = 476,330.70

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Double scale
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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.