Home / 885,643.20-1,328,464.80-511,228.80

Finding the Fourth Proportional to 885,643.20, 1,328,464.80 and 511,228.80

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Solution

The fourth proportional to 885,643.20, 1,328,464.80 and 511,228.80 is: 766,843.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,643.20 : 1,328,464.80 = 511,228.80 : x
  2. Step 2: Convert to fraction form
    885,643.20/1,328,464.80 = 511,228.80/x
  3. Step 3: Cross multiply
    885,643.20x = 1,328,464.80 × 511,228.80
  4. Step 4: Simplify right side
    885,643.20x = 679,149,465,546.24
  5. Step 5: Solve for x
    x = 679,149,465,546.24/885,643.20
  6. Step 6: Final answer
    x = 766,843.20

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Double scale
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Similar ratio
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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.