Home / 668,719.40-1,003,079.10-440,396.60

Finding the Fourth Proportional to 668,719.40, 1,003,079.10 and 440,396.60

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Solution

The fourth proportional to 668,719.40, 1,003,079.10 and 440,396.60 is: 660,594.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,719.40 : 1,003,079.10 = 440,396.60 : x
  2. Step 2: Convert to fraction form
    668,719.40/1,003,079.10 = 440,396.60/x
  3. Step 3: Cross multiply
    668,719.40x = 1,003,079.10 × 440,396.60
  4. Step 4: Simplify right side
    668,719.40x = 441,752,625,171.06
  5. Step 5: Solve for x
    x = 441,752,625,171.06/668,719.40
  6. Step 6: Final answer
    x = 660,594.90

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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.