Home / 1,208,995.89-1,668,414.33-665,120

Finding the Fourth Proportional to 1,208,995.89, 1,668,414.33 and 665,120

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Solution

The fourth proportional to 1,208,995.89, 1,668,414.33 and 665,120 is: 917,865.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,995.89 : 1,668,414.33 = 665,120 : x
  2. Step 2: Convert to fraction form
    1,208,995.89/1,668,414.33 = 665,120/x
  3. Step 3: Cross multiply
    1,208,995.89x = 1,668,414.33 × 665,120
  4. Step 4: Simplify right side
    1,208,995.89x = 1,109,695,738,338.20
  5. Step 5: Solve for x
    x = 1,109,695,738,338.20/1,208,995.89
  6. Step 6: Final answer
    x = 917,865.60

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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.