Home / 643,756.20-965,634.30-269,740.20

Finding the Fourth Proportional to 643,756.20, 965,634.30 and 269,740.20

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Solution

The fourth proportional to 643,756.20, 965,634.30 and 269,740.20 is: 404,610.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,756.20 : 965,634.30 = 269,740.20 : x
  2. Step 2: Convert to fraction form
    643,756.20/965,634.30 = 269,740.20/x
  3. Step 3: Cross multiply
    643,756.20x = 965,634.30 × 269,740.20
  4. Step 4: Simplify right side
    643,756.20x = 260,470,389,208.86
  5. Step 5: Solve for x
    x = 260,470,389,208.86/643,756.20
  6. Step 6: Final answer
    x = 404,610.30

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Similar ratio
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1.5x scale

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.