Home / 1,422,543.80-2,133,815.70-1,318,863.80

Finding the Fourth Proportional to 1,422,543.80, 2,133,815.70 and 1,318,863.80

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Solution

The fourth proportional to 1,422,543.80, 2,133,815.70 and 1,318,863.80 is: 1,978,295.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,422,543.80 : 2,133,815.70 = 1,318,863.80 : x
  2. Step 2: Convert to fraction form
    1,422,543.80/2,133,815.70 = 1,318,863.80/x
  3. Step 3: Cross multiply
    1,422,543.80x = 2,133,815.70 × 1,318,863.80
  4. Step 4: Simplify right side
    1,422,543.80x = 2,814,212,282,601.66
  5. Step 5: Solve for x
    x = 2,814,212,282,601.66/1,422,543.80
  6. Step 6: Final answer
    x = 1,978,295.70

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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.