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Finding the Fourth Proportional to 502,791.13, 693,851.77 and 276,436.63

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Solution

The fourth proportional to 502,791.13, 693,851.77 and 276,436.63 is: 381,482.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,791.13 : 693,851.77 = 276,436.63 : x
  2. Step 2: Convert to fraction form
    502,791.13/693,851.77 = 276,436.63/x
  3. Step 3: Cross multiply
    502,791.13x = 693,851.77 × 276,436.63
  4. Step 4: Simplify right side
    502,791.13x = 191,806,045,018.34
  5. Step 5: Solve for x
    x = 191,806,045,018.34/502,791.13
  6. Step 6: Final answer
    x = 381,482.56

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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.