Home / 812,843.16-1,220,021.34-413,782.62

Finding the Fourth Proportional to 812,843.16, 1,220,021.34 and 413,782.62

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Solution

The fourth proportional to 812,843.16, 1,220,021.34 and 413,782.62 is: 621,059.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,843.16 : 1,220,021.34 = 413,782.62 : x
  2. Step 2: Convert to fraction form
    812,843.16/1,220,021.34 = 413,782.62/x
  3. Step 3: Cross multiply
    812,843.16x = 1,220,021.34 × 413,782.62
  4. Step 4: Simplify right side
    812,843.16x = 504,823,626,521.11
  5. Step 5: Solve for x
    x = 504,823,626,521.11/812,843.16
  6. Step 6: Final answer
    x = 621,059.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.