Home / 1,221,085.89-1,685,202.03-677,396.88

Finding the Fourth Proportional to 1,221,085.89, 1,685,202.03 and 677,396.88

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Solution

The fourth proportional to 1,221,085.89, 1,685,202.03 and 677,396.88 is: 934,865.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,085.89 : 1,685,202.03 = 677,396.88 : x
  2. Step 2: Convert to fraction form
    1,221,085.89/1,685,202.03 = 677,396.88/x
  3. Step 3: Cross multiply
    1,221,085.89x = 1,685,202.03 × 677,396.88
  4. Step 4: Simplify right side
    1,221,085.89x = 1,141,550,597,291.67
  5. Step 5: Solve for x
    x = 1,141,550,597,291.67/1,221,085.89
  6. Step 6: Final answer
    x = 934,865.11

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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.