Home / 638,160.39-880,667.37-351,690.93

Finding the Fourth Proportional to 638,160.39, 880,667.37 and 351,690.93

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Solution

The fourth proportional to 638,160.39, 880,667.37 and 351,690.93 is: 485,336.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,160.39 : 880,667.37 = 351,690.93 : x
  2. Step 2: Convert to fraction form
    638,160.39/880,667.37 = 351,690.93/x
  3. Step 3: Cross multiply
    638,160.39x = 880,667.37 × 351,690.93
  4. Step 4: Simplify right side
    638,160.39x = 309,722,726,375.95
  5. Step 5: Solve for x
    x = 309,722,726,375.95/638,160.39
  6. Step 6: Final answer
    x = 485,336.81

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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.