Home / 804,906.30-1,207,359.45-213,930.30

Finding the Fourth Proportional to 804,906.30, 1,207,359.45 and 213,930.30

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Solution

The fourth proportional to 804,906.30, 1,207,359.45 and 213,930.30 is: 320,895.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,906.30 : 1,207,359.45 = 213,930.30 : x
  2. Step 2: Convert to fraction form
    804,906.30/1,207,359.45 = 213,930.30/x
  3. Step 3: Cross multiply
    804,906.30x = 1,207,359.45 × 213,930.30
  4. Step 4: Simplify right side
    804,906.30x = 258,290,769,346.34
  5. Step 5: Solve for x
    x = 258,290,769,346.34/804,906.30
  6. Step 6: Final answer
    x = 320,895.45

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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.