Home / 1,112,406.39-1,535,078.20-628,981.65

Finding the Fourth Proportional to 1,112,406.39, 1,535,078.20 and 628,981.65

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Solution

The fourth proportional to 1,112,406.39, 1,535,078.20 and 628,981.65 is: 867,970.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,112,406.39 : 1,535,078.20 = 628,981.65 : x
  2. Step 2: Convert to fraction form
    1,112,406.39/1,535,078.20 = 628,981.65/x
  3. Step 3: Cross multiply
    1,112,406.39x = 1,535,078.20 × 628,981.65
  4. Step 4: Simplify right side
    1,112,406.39x = 965,536,019,115.03
  5. Step 5: Solve for x
    x = 965,536,019,115.03/1,112,406.39
  6. Step 6: Final answer
    x = 867,970.58

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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.