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Finding the Fourth Proportional to 693,627.60, 1,040,441.40 and 220,360.80

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Solution

The fourth proportional to 693,627.60, 1,040,441.40 and 220,360.80 is: 330,541.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,627.60 : 1,040,441.40 = 220,360.80 : x
  2. Step 2: Convert to fraction form
    693,627.60/1,040,441.40 = 220,360.80/x
  3. Step 3: Cross multiply
    693,627.60x = 1,040,441.40 × 220,360.80
  4. Step 4: Simplify right side
    693,627.60x = 229,272,499,257.12
  5. Step 5: Solve for x
    x = 229,272,499,257.12/693,627.60
  6. Step 6: Final answer
    x = 330,541.20

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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.