Home / 643,360.60-964,868.10-269,306.20

Finding the Fourth Proportional to 643,360.60, 964,868.10 and 269,306.20

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Solution

The fourth proportional to 643,360.60, 964,868.10 and 269,306.20 is: 403,886.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,360.60 : 964,868.10 = 269,306.20 : x
  2. Step 2: Convert to fraction form
    643,360.60/964,868.10 = 269,306.20/x
  3. Step 3: Cross multiply
    643,360.60x = 964,868.10 × 269,306.20
  4. Step 4: Simplify right side
    643,360.60x = 259,844,961,512.22
  5. Step 5: Solve for x
    x = 259,844,961,512.22/643,360.60
  6. Step 6: Final answer
    x = 403,886.97

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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.