Home / 813,205.31-1,122,229.91-450,635.22

Finding the Fourth Proportional to 813,205.31, 1,122,229.91 and 450,635.22

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Solution

The fourth proportional to 813,205.31, 1,122,229.91 and 450,635.22 is: 621,880.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,205.31 : 1,122,229.91 = 450,635.22 : x
  2. Step 2: Convert to fraction form
    813,205.31/1,122,229.91 = 450,635.22/x
  3. Step 3: Cross multiply
    813,205.31x = 1,122,229.91 × 450,635.22
  4. Step 4: Simplify right side
    813,205.31x = 505,716,319,301.66
  5. Step 5: Solve for x
    x = 505,716,319,301.66/813,205.31
  6. Step 6: Final answer
    x = 621,880.25

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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.