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Finding the Fourth Proportional to 687,272, 948,850.08 and 449,222.72

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Solution

The fourth proportional to 687,272, 948,850.08 and 449,222.72 is: 620,198.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,272 : 948,850.08 = 449,222.72 : x
  2. Step 2: Convert to fraction form
    687,272/948,850.08 = 449,222.72/x
  3. Step 3: Cross multiply
    687,272x = 948,850.08 × 449,222.72
  4. Step 4: Simplify right side
    687,272x = 426,245,013,809.82
  5. Step 5: Solve for x
    x = 426,245,013,809.82/687,272
  6. Step 6: Final answer
    x = 620,198.43

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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.