Home / 1,205,375.09-1,663,412.39-661,519.67

Finding the Fourth Proportional to 1,205,375.09, 1,663,412.39 and 661,519.67

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Solution

The fourth proportional to 1,205,375.09, 1,663,412.39 and 661,519.67 is: 912,894.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,205,375.09 : 1,663,412.39 = 661,519.67 : x
  2. Step 2: Convert to fraction form
    1,205,375.09/1,663,412.39 = 661,519.67/x
  3. Step 3: Cross multiply
    1,205,375.09x = 1,663,412.39 × 661,519.67
  4. Step 4: Simplify right side
    1,205,375.09x = 1,100,380,015,306.71
  5. Step 5: Solve for x
    x = 1,100,380,015,306.71/1,205,375.09
  6. Step 6: Final answer
    x = 912,894.27

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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.