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Finding the Fourth Proportional to 387,674.49, 581,435.08 and 368,449.48

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Solution

The fourth proportional to 387,674.49, 581,435.08 and 368,449.48 is: 552,601.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,674.49 : 581,435.08 = 368,449.48 : x
  2. Step 2: Convert to fraction form
    387,674.49/581,435.08 = 368,449.48/x
  3. Step 3: Cross multiply
    387,674.49x = 581,435.08 × 368,449.48
  4. Step 4: Simplify right side
    387,674.49x = 214,229,449,972.58
  5. Step 5: Solve for x
    x = 214,229,449,972.58/387,674.49
  6. Step 6: Final answer
    x = 552,601.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.