Home / 728,112.15-1,091,310.39-328,284.81

Finding the Fourth Proportional to 728,112.15, 1,091,310.39 and 328,284.81

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Solution

The fourth proportional to 728,112.15, 1,091,310.39 and 328,284.81 is: 492,040.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,112.15 : 1,091,310.39 = 328,284.81 : x
  2. Step 2: Convert to fraction form
    728,112.15/1,091,310.39 = 328,284.81/x
  3. Step 3: Cross multiply
    728,112.15x = 1,091,310.39 × 328,284.81
  4. Step 4: Simplify right side
    728,112.15x = 358,260,624,032.18
  5. Step 5: Solve for x
    x = 358,260,624,032.18/728,112.15
  6. Step 6: Final answer
    x = 492,040.44

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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.