Home / 1,991,610.72-2,987,417.76-853,634.40

Finding the Fourth Proportional to 1,991,610.72, 2,987,417.76 and 853,634.40

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Solution

The fourth proportional to 1,991,610.72, 2,987,417.76 and 853,634.40 is: 1,280,452.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,610.72 : 2,987,417.76 = 853,634.40 : x
  2. Step 2: Convert to fraction form
    1,991,610.72/2,987,417.76 = 853,634.40/x
  3. Step 3: Cross multiply
    1,991,610.72x = 2,987,417.76 × 853,634.40
  4. Step 4: Simplify right side
    1,991,610.72x = 2,550,162,567,106.94
  5. Step 5: Solve for x
    x = 2,550,162,567,106.94/1,991,610.72
  6. Step 6: Final answer
    x = 1,280,452.32

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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.