Home / 1,211,279.20-1,816,918.80-738,887.20

Finding the Fourth Proportional to 1,211,279.20, 1,816,918.80 and 738,887.20

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Solution

The fourth proportional to 1,211,279.20, 1,816,918.80 and 738,887.20 is: 1,108,330.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,279.20 : 1,816,918.80 = 738,887.20 : x
  2. Step 2: Convert to fraction form
    1,211,279.20/1,816,918.80 = 738,887.20/x
  3. Step 3: Cross multiply
    1,211,279.20x = 1,816,918.80 × 738,887.20
  4. Step 4: Simplify right side
    1,211,279.20x = 1,342,498,044,759.36
  5. Step 5: Solve for x
    x = 1,342,498,044,759.36/1,211,279.20
  6. Step 6: Final answer
    x = 1,108,330.80

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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.