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Finding the Fourth Proportional to 769,458.80, 1,152,805.80 and 658,866.80

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Solution

The fourth proportional to 769,458.80, 1,152,805.80 and 658,866.80 is: 987,116.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,458.80 : 1,152,805.80 = 658,866.80 : x
  2. Step 2: Convert to fraction form
    769,458.80/1,152,805.80 = 658,866.80/x
  3. Step 3: Cross multiply
    769,458.80x = 1,152,805.80 × 658,866.80
  4. Step 4: Simplify right side
    769,458.80x = 759,545,468,467.44
  5. Step 5: Solve for x
    x = 759,545,468,467.44/769,458.80
  6. Step 6: Final answer
    x = 987,116.49

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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.