Home / 838,378.74-1,263,216.90-691,899.96

Finding the Fourth Proportional to 838,378.74, 1,263,216.90 and 691,899.96

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Solution

The fourth proportional to 838,378.74, 1,263,216.90 and 691,899.96 is: 1,042,511.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,378.74 : 1,263,216.90 = 691,899.96 : x
  2. Step 2: Convert to fraction form
    838,378.74/1,263,216.90 = 691,899.96/x
  3. Step 3: Cross multiply
    838,378.74x = 1,263,216.90 × 691,899.96
  4. Step 4: Simplify right side
    838,378.74x = 874,019,722,581.32
  5. Step 5: Solve for x
    x = 874,019,722,581.32/838,378.74
  6. Step 6: Final answer
    x = 1,042,511.79

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.