Home / 643,431.40-965,262.30-269,492.20

Finding the Fourth Proportional to 643,431.40, 965,262.30 and 269,492.20

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Solution

The fourth proportional to 643,431.40, 965,262.30 and 269,492.20 is: 404,286.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,431.40 : 965,262.30 = 269,492.20 : x
  2. Step 2: Convert to fraction form
    643,431.40/965,262.30 = 269,492.20/x
  3. Step 3: Cross multiply
    643,431.40x = 965,262.30 × 269,492.20
  4. Step 4: Simplify right side
    643,431.40x = 260,130,660,804.06
  5. Step 5: Solve for x
    x = 260,130,660,804.06/643,431.40
  6. Step 6: Final answer
    x = 404,286.55

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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.