Home / 839,929.20-1,259,893.80-485,635.20

Finding the Fourth Proportional to 839,929.20, 1,259,893.80 and 485,635.20

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Solution

The fourth proportional to 839,929.20, 1,259,893.80 and 485,635.20 is: 728,452.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,929.20 : 1,259,893.80 = 485,635.20 : x
  2. Step 2: Convert to fraction form
    839,929.20/1,259,893.80 = 485,635.20/x
  3. Step 3: Cross multiply
    839,929.20x = 1,259,893.80 × 485,635.20
  4. Step 4: Simplify right side
    839,929.20x = 611,848,777,541.76
  5. Step 5: Solve for x
    x = 611,848,777,541.76/839,929.20
  6. Step 6: Final answer
    x = 728,452.80

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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.