Home / 643,583.25-888,187.32-371,662.56

Finding the Fourth Proportional to 643,583.25, 888,187.32 and 371,662.56

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Solution

The fourth proportional to 643,583.25, 888,187.32 and 371,662.56 is: 512,918.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,583.25 : 888,187.32 = 371,662.56 : x
  2. Step 2: Convert to fraction form
    643,583.25/888,187.32 = 371,662.56/x
  3. Step 3: Cross multiply
    643,583.25x = 888,187.32 × 371,662.56
  4. Step 4: Simplify right side
    643,583.25x = 330,105,973,110.74
  5. Step 5: Solve for x
    x = 330,105,973,110.74/643,583.25
  6. Step 6: Final answer
    x = 512,918.84

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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.