Home / 819,897.20-1,229,845.80-654,009.20

Finding the Fourth Proportional to 819,897.20, 1,229,845.80 and 654,009.20

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Solution

The fourth proportional to 819,897.20, 1,229,845.80 and 654,009.20 is: 981,013.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,897.20 : 1,229,845.80 = 654,009.20 : x
  2. Step 2: Convert to fraction form
    819,897.20/1,229,845.80 = 654,009.20/x
  3. Step 3: Cross multiply
    819,897.20x = 1,229,845.80 × 654,009.20
  4. Step 4: Simplify right side
    819,897.20x = 804,330,467,781.36
  5. Step 5: Solve for x
    x = 804,330,467,781.36/819,897.20
  6. Step 6: Final answer
    x = 981,013.80

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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.