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Finding the Fourth Proportional to 979,906, 1,467,292.94 and 641,883.28

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Solution

The fourth proportional to 979,906, 1,467,292.94 and 641,883.28 is: 961,144.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,906 : 1,467,292.94 = 641,883.28 : x
  2. Step 2: Convert to fraction form
    979,906/1,467,292.94 = 641,883.28/x
  3. Step 3: Cross multiply
    979,906x = 1,467,292.94 × 641,883.28
  4. Step 4: Simplify right side
    979,906x = 941,830,805,048.04
  5. Step 5: Solve for x
    x = 941,830,805,048.04/979,906
  6. Step 6: Final answer
    x = 961,144.03

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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.