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Finding the Fourth Proportional to 1,222,976.07, 1,834,789.43 and 424,256.31

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Solution

The fourth proportional to 1,222,976.07, 1,834,789.43 and 424,256.31 is: 636,497.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,976.07 : 1,834,789.43 = 424,256.31 : x
  2. Step 2: Convert to fraction form
    1,222,976.07/1,834,789.43 = 424,256.31/x
  3. Step 3: Cross multiply
    1,222,976.07x = 1,834,789.43 × 424,256.31
  4. Step 4: Simplify right side
    1,222,976.07x = 778,420,993,198.80
  5. Step 5: Solve for x
    x = 778,420,993,198.80/1,222,976.07
  6. Step 6: Final answer
    x = 636,497.32

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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.