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Finding the Fourth Proportional to 638,186.48, 880,703.16 and 351,716.96

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Solution

The fourth proportional to 638,186.48, 880,703.16 and 351,716.96 is: 485,372.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,186.48 : 880,703.16 = 351,716.96 : x
  2. Step 2: Convert to fraction form
    638,186.48/880,703.16 = 351,716.96/x
  3. Step 3: Cross multiply
    638,186.48x = 880,703.16 × 351,716.96
  4. Step 4: Simplify right side
    638,186.48x = 309,758,238,097.59
  5. Step 5: Solve for x
    x = 309,758,238,097.59/638,186.48
  6. Step 6: Final answer
    x = 485,372.61

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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.