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Finding the Fourth Proportional to 768,898.66, 1,153,379.40 and 263,806.96

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Solution

The fourth proportional to 768,898.66, 1,153,379.40 and 263,806.96 is: 395,721.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,898.66 : 1,153,379.40 = 263,806.96 : x
  2. Step 2: Convert to fraction form
    768,898.66/1,153,379.40 = 263,806.96/x
  3. Step 3: Cross multiply
    768,898.66x = 1,153,379.40 × 263,806.96
  4. Step 4: Simplify right side
    768,898.66x = 304,269,513,240.62
  5. Step 5: Solve for x
    x = 304,269,513,240.62/768,898.66
  6. Step 6: Final answer
    x = 395,721.22

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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.