Home / 1,187,628.80-1,640,281.17-804,991.28

Finding the Fourth Proportional to 1,187,628.80, 1,640,281.17 and 804,991.28

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Solution

The fourth proportional to 1,187,628.80, 1,640,281.17 and 804,991.28 is: 1,111,805.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,628.80 : 1,640,281.17 = 804,991.28 : x
  2. Step 2: Convert to fraction form
    1,187,628.80/1,640,281.17 = 804,991.28/x
  3. Step 3: Cross multiply
    1,187,628.80x = 1,640,281.17 × 804,991.28
  4. Step 4: Simplify right side
    1,187,628.80x = 1,320,412,030,396.79
  5. Step 5: Solve for x
    x = 1,320,412,030,396.79/1,187,628.80
  6. Step 6: Final answer
    x = 1,111,805.34

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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.