Home / 1,211,078.45-1,816,608.57-312,443.80

Finding the Fourth Proportional to 1,211,078.45, 1,816,608.57 and 312,443.80

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Solution

The fourth proportional to 1,211,078.45, 1,816,608.57 and 312,443.80 is: 468,663.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,078.45 : 1,816,608.57 = 312,443.80 : x
  2. Step 2: Convert to fraction form
    1,211,078.45/1,816,608.57 = 312,443.80/x
  3. Step 3: Cross multiply
    1,211,078.45x = 1,816,608.57 × 312,443.80
  4. Step 4: Simplify right side
    1,211,078.45x = 567,588,079,010.18
  5. Step 5: Solve for x
    x = 567,588,079,010.18/1,211,078.45
  6. Step 6: Final answer
    x = 468,663.35

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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.