Home / 821,736.40-1,230,185.40-612,302.80

Finding the Fourth Proportional to 821,736.40, 1,230,185.40 and 612,302.80

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Solution

The fourth proportional to 821,736.40, 1,230,185.40 and 612,302.80 is: 916,651.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,736.40 : 1,230,185.40 = 612,302.80 : x
  2. Step 2: Convert to fraction form
    821,736.40/1,230,185.40 = 612,302.80/x
  3. Step 3: Cross multiply
    821,736.40x = 1,230,185.40 × 612,302.80
  4. Step 4: Simplify right side
    821,736.40x = 753,245,964,939.12
  5. Step 5: Solve for x
    x = 753,245,964,939.12/821,736.40
  6. Step 6: Final answer
    x = 916,651.57

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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.