Home / 666,986.69-1,000,481.40-312,249.83

Finding the Fourth Proportional to 666,986.69, 1,000,481.40 and 312,249.83

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Solution

The fourth proportional to 666,986.69, 1,000,481.40 and 312,249.83 is: 468,375.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,986.69 : 1,000,481.40 = 312,249.83 : x
  2. Step 2: Convert to fraction form
    666,986.69/1,000,481.40 = 312,249.83/x
  3. Step 3: Cross multiply
    666,986.69x = 1,000,481.40 × 312,249.83
  4. Step 4: Simplify right side
    666,986.69x = 312,400,142,065.76
  5. Step 5: Solve for x
    x = 312,400,142,065.76/666,986.69
  6. Step 6: Final answer
    x = 468,375.38

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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.