Home / 1,131,571.86-1,561,521.66-641,574.36

Finding the Fourth Proportional to 1,131,571.86, 1,561,521.66 and 641,574.36

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Solution

The fourth proportional to 1,131,571.86, 1,561,521.66 and 641,574.36 is: 885,345.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,571.86 : 1,561,521.66 = 641,574.36 : x
  2. Step 2: Convert to fraction form
    1,131,571.86/1,561,521.66 = 641,574.36/x
  3. Step 3: Cross multiply
    1,131,571.86x = 1,561,521.66 × 641,574.36
  4. Step 4: Simplify right side
    1,131,571.86x = 1,001,832,259,640.64
  5. Step 5: Solve for x
    x = 1,001,832,259,640.64/1,131,571.86
  6. Step 6: Final answer
    x = 885,345.68

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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.