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Finding the Fourth Proportional to 445,980.60, 667,221.30 and 403,990.20

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Solution

The fourth proportional to 445,980.60, 667,221.30 and 403,990.20 is: 604,400.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,980.60 : 667,221.30 = 403,990.20 : x
  2. Step 2: Convert to fraction form
    445,980.60/667,221.30 = 403,990.20/x
  3. Step 3: Cross multiply
    445,980.60x = 667,221.30 × 403,990.20
  4. Step 4: Simplify right side
    445,980.60x = 269,550,866,431.26
  5. Step 5: Solve for x
    x = 269,550,866,431.26/445,980.60
  6. Step 6: Final answer
    x = 604,400.43

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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.