Home / 814,063.72-1,220,788.86-340,781.80

Finding the Fourth Proportional to 814,063.72, 1,220,788.86 and 340,781.80

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Solution

The fourth proportional to 814,063.72, 1,220,788.86 and 340,781.80 is: 511,044.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,063.72 : 1,220,788.86 = 340,781.80 : x
  2. Step 2: Convert to fraction form
    814,063.72/1,220,788.86 = 340,781.80/x
  3. Step 3: Cross multiply
    814,063.72x = 1,220,788.86 × 340,781.80
  4. Step 4: Simplify right side
    814,063.72x = 416,022,625,130.75
  5. Step 5: Solve for x
    x = 416,022,625,130.75/814,063.72
  6. Step 6: Final answer
    x = 511,044.30

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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.