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Finding the Fourth Proportional to 504,991.98, 696,891.33 and 278,637.48

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Solution

The fourth proportional to 504,991.98, 696,891.33 and 278,637.48 is: 384,521.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,991.98 : 696,891.33 = 278,637.48 : x
  2. Step 2: Convert to fraction form
    504,991.98/696,891.33 = 278,637.48/x
  3. Step 3: Cross multiply
    504,991.98x = 696,891.33 × 278,637.48
  4. Step 4: Simplify right side
    504,991.98x = 194,180,044,025.05
  5. Step 5: Solve for x
    x = 194,180,044,025.05/504,991.98
  6. Step 6: Final answer
    x = 384,521.05

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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.