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Finding the Fourth Proportional to 487,888, 731,076.24 and 338,418.88

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Solution

The fourth proportional to 487,888, 731,076.24 and 338,418.88 is: 507,104.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,888 : 731,076.24 = 338,418.88 : x
  2. Step 2: Convert to fraction form
    487,888/731,076.24 = 338,418.88/x
  3. Step 3: Cross multiply
    487,888x = 731,076.24 × 338,418.88
  4. Step 4: Simplify right side
    487,888x = 247,410,002,335.41
  5. Step 5: Solve for x
    x = 247,410,002,335.41/487,888
  6. Step 6: Final answer
    x = 507,104.09

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1.5x scale

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.