Home / 389,914.36-583,540.80-326,805.72

Finding the Fourth Proportional to 389,914.36, 583,540.80 and 326,805.72

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Solution

The fourth proportional to 389,914.36, 583,540.80 and 326,805.72 is: 489,093.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,914.36 : 583,540.80 = 326,805.72 : x
  2. Step 2: Convert to fraction form
    389,914.36/583,540.80 = 326,805.72/x
  3. Step 3: Cross multiply
    389,914.36x = 583,540.80 × 326,805.72
  4. Step 4: Simplify right side
    389,914.36x = 190,704,471,293.38
  5. Step 5: Solve for x
    x = 190,704,471,293.38/389,914.36
  6. Step 6: Final answer
    x = 489,093.22

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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.