Home / 687,836.09-1,031,736.86-238,878.65

Finding the Fourth Proportional to 687,836.09, 1,031,736.86 and 238,878.65

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Solution

The fourth proportional to 687,836.09, 1,031,736.86 and 238,878.65 is: 358,311.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,836.09 : 1,031,736.86 = 238,878.65 : x
  2. Step 2: Convert to fraction form
    687,836.09/1,031,736.86 = 238,878.65/x
  3. Step 3: Cross multiply
    687,836.09x = 1,031,736.86 × 238,878.65
  4. Step 4: Simplify right side
    687,836.09x = 246,459,907,077.65
  5. Step 5: Solve for x
    x = 246,459,907,077.65/687,836.09
  6. Step 6: Final answer
    x = 358,311.97

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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.