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Finding the Fourth Proportional to 665,794, 918,799 and 363,988

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Solution

The fourth proportional to 665,794, 918,799 and 363,988 is: 502,305.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,794 : 918,799 = 363,988 : x
  2. Step 2: Convert to fraction form
    665,794/918,799 = 363,988/x
  3. Step 3: Cross multiply
    665,794x = 918,799 × 363,988
  4. Step 4: Simplify right side
    665,794x = 334,431,810,412
  5. Step 5: Solve for x
    x = 334,431,810,412/665,794
  6. Step 6: Final answer
    x = 502,305.23

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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.