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Finding the Fourth Proportional to 761,809.80, 1,142,792.52 and 263,109

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Solution

The fourth proportional to 761,809.80, 1,142,792.52 and 263,109 is: 394,690.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,809.80 : 1,142,792.52 = 263,109 : x
  2. Step 2: Convert to fraction form
    761,809.80/1,142,792.52 = 263,109/x
  3. Step 3: Cross multiply
    761,809.80x = 1,142,792.52 × 263,109
  4. Step 4: Simplify right side
    761,809.80x = 300,678,997,144.68
  5. Step 5: Solve for x
    x = 300,678,997,144.68/761,809.80
  6. Step 6: Final answer
    x = 394,690.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.