Home / 756,987.80-1,135,481.70-307,559.30

Finding the Fourth Proportional to 756,987.80, 1,135,481.70 and 307,559.30

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Solution

The fourth proportional to 756,987.80, 1,135,481.70 and 307,559.30 is: 461,338.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,987.80 : 1,135,481.70 = 307,559.30 : x
  2. Step 2: Convert to fraction form
    756,987.80/1,135,481.70 = 307,559.30/x
  3. Step 3: Cross multiply
    756,987.80x = 1,135,481.70 × 307,559.30
  4. Step 4: Simplify right side
    756,987.80x = 349,227,956,814.81
  5. Step 5: Solve for x
    x = 349,227,956,814.81/756,987.80
  6. Step 6: Final answer
    x = 461,338.95

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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.