Home / 885,481.20-1,328,221.80-286,858.80

Finding the Fourth Proportional to 885,481.20, 1,328,221.80 and 286,858.80

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Solution

The fourth proportional to 885,481.20, 1,328,221.80 and 286,858.80 is: 430,288.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,481.20 : 1,328,221.80 = 286,858.80 : x
  2. Step 2: Convert to fraction form
    885,481.20/1,328,221.80 = 286,858.80/x
  3. Step 3: Cross multiply
    885,481.20x = 1,328,221.80 × 286,858.80
  4. Step 4: Simplify right side
    885,481.20x = 381,012,111,681.84
  5. Step 5: Solve for x
    x = 381,012,111,681.84/885,481.20
  6. Step 6: Final answer
    x = 430,288.20

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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.