Home / 1,210,321.80-1,815,482.70-323,857.80

Finding the Fourth Proportional to 1,210,321.80, 1,815,482.70 and 323,857.80

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Solution

The fourth proportional to 1,210,321.80, 1,815,482.70 and 323,857.80 is: 485,786.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,321.80 : 1,815,482.70 = 323,857.80 : x
  2. Step 2: Convert to fraction form
    1,210,321.80/1,815,482.70 = 323,857.80/x
  3. Step 3: Cross multiply
    1,210,321.80x = 1,815,482.70 × 323,857.80
  4. Step 4: Simplify right side
    1,210,321.80x = 587,958,233,160.06
  5. Step 5: Solve for x
    x = 587,958,233,160.06/1,210,321.80
  6. Step 6: Final answer
    x = 485,786.70

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Double scale
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Similar ratio
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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.