Home / 812,867.16-1,121,741.97-450,289.89

Finding the Fourth Proportional to 812,867.16, 1,121,741.97 and 450,289.89

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Solution

The fourth proportional to 812,867.16, 1,121,741.97 and 450,289.89 is: 621,391.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,867.16 : 1,121,741.97 = 450,289.89 : x
  2. Step 2: Convert to fraction form
    812,867.16/1,121,741.97 = 450,289.89/x
  3. Step 3: Cross multiply
    812,867.16x = 1,121,741.97 × 450,289.89
  4. Step 4: Simplify right side
    812,867.16x = 505,109,068,279.68
  5. Step 5: Solve for x
    x = 505,109,068,279.68/812,867.16
  6. Step 6: Final answer
    x = 621,391.90

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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.