Home / 809,009.40-1,213,514.10-804,343.80

Finding the Fourth Proportional to 809,009.40, 1,213,514.10 and 804,343.80

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Solution

The fourth proportional to 809,009.40, 1,213,514.10 and 804,343.80 is: 1,206,515.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,009.40 : 1,213,514.10 = 804,343.80 : x
  2. Step 2: Convert to fraction form
    809,009.40/1,213,514.10 = 804,343.80/x
  3. Step 3: Cross multiply
    809,009.40x = 1,213,514.10 × 804,343.80
  4. Step 4: Simplify right side
    809,009.40x = 976,082,542,547.58
  5. Step 5: Solve for x
    x = 976,082,542,547.58/809,009.40
  6. Step 6: Final answer
    x = 1,206,515.70

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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.