Home / 1,586,556.80-2,189,435.60-861,390.16

Finding the Fourth Proportional to 1,586,556.80, 2,189,435.60 and 861,390.16

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Solution

The fourth proportional to 1,586,556.80, 2,189,435.60 and 861,390.16 is: 1,188,711.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,586,556.80 : 2,189,435.60 = 861,390.16 : x
  2. Step 2: Convert to fraction form
    1,586,556.80/2,189,435.60 = 861,390.16/x
  3. Step 3: Cross multiply
    1,586,556.80x = 2,189,435.60 × 861,390.16
  4. Step 4: Simplify right side
    1,586,556.80x = 1,885,958,281,793.70
  5. Step 5: Solve for x
    x = 1,885,958,281,793.70/1,586,556.80
  6. Step 6: Final answer
    x = 1,188,711.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.