Home / 838,379.74-1,263,218.40-691,900.96

Finding the Fourth Proportional to 838,379.74, 1,263,218.40 and 691,900.96

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Solution

The fourth proportional to 838,379.74, 1,263,218.40 and 691,900.96 is: 1,042,513.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,379.74 : 1,263,218.40 = 691,900.96 : x
  2. Step 2: Convert to fraction form
    838,379.74/1,263,218.40 = 691,900.96/x
  3. Step 3: Cross multiply
    838,379.74x = 1,263,218.40 × 691,900.96
  4. Step 4: Simplify right side
    838,379.74x = 874,022,023,649.66
  5. Step 5: Solve for x
    x = 874,022,023,649.66/838,379.74
  6. Step 6: Final answer
    x = 1,042,513.29

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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.