Home / 1,112,407.68-1,535,028.12-628,905.72

Finding the Fourth Proportional to 1,112,407.68, 1,535,028.12 and 628,905.72

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Solution

The fourth proportional to 1,112,407.68, 1,535,028.12 and 628,905.72 is: 867,836.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,112,407.68 : 1,535,028.12 = 628,905.72 : x
  2. Step 2: Convert to fraction form
    1,112,407.68/1,535,028.12 = 628,905.72/x
  3. Step 3: Cross multiply
    1,112,407.68x = 1,535,028.12 × 628,905.72
  4. Step 4: Simplify right side
    1,112,407.68x = 965,387,965,028.85
  5. Step 5: Solve for x
    x = 965,387,965,028.85/1,112,407.68
  6. Step 6: Final answer
    x = 867,836.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.