Home / 812,867.83-1,121,742.91-450,290.57

Finding the Fourth Proportional to 812,867.83, 1,121,742.91 and 450,290.57

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Solution

The fourth proportional to 812,867.83, 1,121,742.91 and 450,290.57 is: 621,392.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,867.83 : 1,121,742.91 = 450,290.57 : x
  2. Step 2: Convert to fraction form
    812,867.83/1,121,742.91 = 450,290.57/x
  3. Step 3: Cross multiply
    812,867.83x = 1,121,742.91 × 450,290.57
  4. Step 4: Simplify right side
    812,867.83x = 505,110,254,337.36
  5. Step 5: Solve for x
    x = 505,110,254,337.36/812,867.83
  6. Step 6: Final answer
    x = 621,392.85

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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.