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Finding the Fourth Proportional to 526,722.98, 726,876.25 and 285,009.66

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Solution

The fourth proportional to 526,722.98, 726,876.25 and 285,009.66 is: 393,312.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,722.98 : 726,876.25 = 285,009.66 : x
  2. Step 2: Convert to fraction form
    526,722.98/726,876.25 = 285,009.66/x
  3. Step 3: Cross multiply
    526,722.98x = 726,876.25 × 285,009.66
  4. Step 4: Simplify right side
    526,722.98x = 207,166,752,162.05
  5. Step 5: Solve for x
    x = 207,166,752,162.05/526,722.98
  6. Step 6: Final answer
    x = 393,312.54

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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.