Home / 1,131,020.07-1,560,768.12-621,718.80

Finding the Fourth Proportional to 1,131,020.07, 1,560,768.12 and 621,718.80

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Solution

The fourth proportional to 1,131,020.07, 1,560,768.12 and 621,718.80 is: 857,950.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,020.07 : 1,560,768.12 = 621,718.80 : x
  2. Step 2: Convert to fraction form
    1,131,020.07/1,560,768.12 = 621,718.80/x
  3. Step 3: Cross multiply
    1,131,020.07x = 1,560,768.12 × 621,718.80
  4. Step 4: Simplify right side
    1,131,020.07x = 970,358,882,644.66
  5. Step 5: Solve for x
    x = 970,358,882,644.66/1,131,020.07
  6. Step 6: Final answer
    x = 857,950.19

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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.