Home / 669,189.12-1,003,630.56-399,393.44

Finding the Fourth Proportional to 669,189.12, 1,003,630.56 and 399,393.44

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Solution

The fourth proportional to 669,189.12, 1,003,630.56 and 399,393.44 is: 598,998.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,189.12 : 1,003,630.56 = 399,393.44 : x
  2. Step 2: Convert to fraction form
    669,189.12/1,003,630.56 = 399,393.44/x
  3. Step 3: Cross multiply
    669,189.12x = 1,003,630.56 × 399,393.44
  4. Step 4: Simplify right side
    669,189.12x = 400,843,461,847.53
  5. Step 5: Solve for x
    x = 400,843,461,847.53/669,189.12
  6. Step 6: Final answer
    x = 598,998.77

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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.