Home / 668,579.40-1,002,990.60-219,175.20

Finding the Fourth Proportional to 668,579.40, 1,002,990.60 and 219,175.20

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Solution

The fourth proportional to 668,579.40, 1,002,990.60 and 219,175.20 is: 328,802.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,579.40 : 1,002,990.60 = 219,175.20 : x
  2. Step 2: Convert to fraction form
    668,579.40/1,002,990.60 = 219,175.20/x
  3. Step 3: Cross multiply
    668,579.40x = 1,002,990.60 × 219,175.20
  4. Step 4: Simplify right side
    668,579.40x = 219,830,665,353.12
  5. Step 5: Solve for x
    x = 219,830,665,353.12/668,579.40
  6. Step 6: Final answer
    x = 328,802.63

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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.