Home / 686,388.29-1,029,259.71-253,806.86

Finding the Fourth Proportional to 686,388.29, 1,029,259.71 and 253,806.86

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Solution

The fourth proportional to 686,388.29, 1,029,259.71 and 253,806.86 is: 380,590.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,388.29 : 1,029,259.71 = 253,806.86 : x
  2. Step 2: Convert to fraction form
    686,388.29/1,029,259.71 = 253,806.86/x
  3. Step 3: Cross multiply
    686,388.29x = 1,029,259.71 × 253,806.86
  4. Step 4: Simplify right side
    686,388.29x = 261,233,177,692.76
  5. Step 5: Solve for x
    x = 261,233,177,692.76/686,388.29
  6. Step 6: Final answer
    x = 380,590.96

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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.