Home / 812,980.43-1,121,897.73-450,396.33

Finding the Fourth Proportional to 812,980.43, 1,121,897.73 and 450,396.33

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Solution

The fourth proportional to 812,980.43, 1,121,897.73 and 450,396.33 is: 621,538.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,980.43 : 1,121,897.73 = 450,396.33 : x
  2. Step 2: Convert to fraction form
    812,980.43/1,121,897.73 = 450,396.33/x
  3. Step 3: Cross multiply
    812,980.43x = 1,121,897.73 × 450,396.33
  4. Step 4: Simplify right side
    812,980.43x = 505,298,617,709.20
  5. Step 5: Solve for x
    x = 505,298,617,709.20/812,980.43
  6. Step 6: Final answer
    x = 621,538.48

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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.