Home / 1,991,598.66-2,987,399.79-853,622.37

Finding the Fourth Proportional to 1,991,598.66, 2,987,399.79 and 853,622.37

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Solution

The fourth proportional to 1,991,598.66, 2,987,399.79 and 853,622.37 is: 1,280,434.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,598.66 : 2,987,399.79 = 853,622.37 : x
  2. Step 2: Convert to fraction form
    1,991,598.66/2,987,399.79 = 853,622.37/x
  3. Step 3: Cross multiply
    1,991,598.66x = 2,987,399.79 × 853,622.37
  4. Step 4: Simplify right side
    1,991,598.66x = 2,550,111,288,877.30
  5. Step 5: Solve for x
    x = 2,550,111,288,877.30/1,991,598.66
  6. Step 6: Final answer
    x = 1,280,434.33

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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.