Home / 812,868.66-1,121,744.04-450,291.39

Finding the Fourth Proportional to 812,868.66, 1,121,744.04 and 450,291.39

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Solution

The fourth proportional to 812,868.66, 1,121,744.04 and 450,291.39 is: 621,393.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,868.66 : 1,121,744.04 = 450,291.39 : x
  2. Step 2: Convert to fraction form
    812,868.66/1,121,744.04 = 450,291.39/x
  3. Step 3: Cross multiply
    812,868.66x = 1,121,744.04 × 450,291.39
  4. Step 4: Simplify right side
    812,868.66x = 505,111,682,995.82
  5. Step 5: Solve for x
    x = 505,111,682,995.82/812,868.66
  6. Step 6: Final answer
    x = 621,393.97

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1.5x scale

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.