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Finding the Fourth Proportional to 502,788.72, 693,851.04 and 276,448.80

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Solution

The fourth proportional to 502,788.72, 693,851.04 and 276,448.80 is: 381,500.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,788.72 : 693,851.04 = 276,448.80 : x
  2. Step 2: Convert to fraction form
    502,788.72/693,851.04 = 276,448.80/x
  3. Step 3: Cross multiply
    502,788.72x = 693,851.04 × 276,448.80
  4. Step 4: Simplify right side
    502,788.72x = 191,814,287,386.75
  5. Step 5: Solve for x
    x = 191,814,287,386.75/502,788.72
  6. Step 6: Final answer
    x = 381,500.78

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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.