Home / 758,939.29-1,138,408.93-285,730.81

Finding the Fourth Proportional to 758,939.29, 1,138,408.93 and 285,730.81

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Solution

The fourth proportional to 758,939.29, 1,138,408.93 and 285,730.81 is: 428,596.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    758,939.29 : 1,138,408.93 = 285,730.81 : x
  2. Step 2: Convert to fraction form
    758,939.29/1,138,408.93 = 285,730.81/x
  3. Step 3: Cross multiply
    758,939.29x = 1,138,408.93 × 285,730.81
  4. Step 4: Simplify right side
    758,939.29x = 325,278,503,191.28
  5. Step 5: Solve for x
    x = 325,278,503,191.28/758,939.29
  6. Step 6: Final answer
    x = 428,596.21

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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.