Home / 1,221,593.70-1,685,609.10-698,296.80

Finding the Fourth Proportional to 1,221,593.70, 1,685,609.10 and 698,296.80

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Solution

The fourth proportional to 1,221,593.70, 1,685,609.10 and 698,296.80 is: 963,540.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,593.70 : 1,685,609.10 = 698,296.80 : x
  2. Step 2: Convert to fraction form
    1,221,593.70/1,685,609.10 = 698,296.80/x
  3. Step 3: Cross multiply
    1,221,593.70x = 1,685,609.10 × 698,296.80
  4. Step 4: Simplify right side
    1,221,593.70x = 1,177,055,440,580.88
  5. Step 5: Solve for x
    x = 1,177,055,440,580.88/1,221,593.70
  6. Step 6: Final answer
    x = 963,540.86

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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.