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Finding the Fourth Proportional to 631,894.59, 872,028.05 and 345,441.33

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Solution

The fourth proportional to 631,894.59, 872,028.05 and 345,441.33 is: 476,716.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,894.59 : 872,028.05 = 345,441.33 : x
  2. Step 2: Convert to fraction form
    631,894.59/872,028.05 = 345,441.33/x
  3. Step 3: Cross multiply
    631,894.59x = 872,028.05 × 345,441.33
  4. Step 4: Simplify right side
    631,894.59x = 301,234,527,662.10
  5. Step 5: Solve for x
    x = 301,234,527,662.10/631,894.59
  6. Step 6: Final answer
    x = 476,716.42

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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.