Home / 687,301.93-948,481.82-381,379.51

Finding the Fourth Proportional to 687,301.93, 948,481.82 and 381,379.51

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Solution

The fourth proportional to 687,301.93, 948,481.82 and 381,379.51 is: 526,306.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,301.93 : 948,481.82 = 381,379.51 : x
  2. Step 2: Convert to fraction form
    687,301.93/948,481.82 = 381,379.51/x
  3. Step 3: Cross multiply
    687,301.93x = 948,481.82 × 381,379.51
  4. Step 4: Simplify right side
    687,301.93x = 361,731,531,755.51
  5. Step 5: Solve for x
    x = 361,731,531,755.51/687,301.93
  6. Step 6: Final answer
    x = 526,306.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.