Home / 1,151,618.31-1,589,267.39-642,309.75

Finding the Fourth Proportional to 1,151,618.31, 1,589,267.39 and 642,309.75

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Solution

The fourth proportional to 1,151,618.31, 1,589,267.39 and 642,309.75 is: 886,406.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,151,618.31 : 1,589,267.39 = 642,309.75 : x
  2. Step 2: Convert to fraction form
    1,151,618.31/1,589,267.39 = 642,309.75/x
  3. Step 3: Cross multiply
    1,151,618.31x = 1,589,267.39 × 642,309.75
  4. Step 4: Simplify right side
    1,151,618.31x = 1,020,801,936,742.50
  5. Step 5: Solve for x
    x = 1,020,801,936,742.50/1,151,618.31
  6. Step 6: Final answer
    x = 886,406.48

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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.