Home / 1,290,914.40-1,781,484.76-717,954.82

Finding the Fourth Proportional to 1,290,914.40, 1,781,484.76 and 717,954.82

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Solution

The fourth proportional to 1,290,914.40, 1,781,484.76 and 717,954.82 is: 990,790.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,914.40 : 1,781,484.76 = 717,954.82 : x
  2. Step 2: Convert to fraction form
    1,290,914.40/1,781,484.76 = 717,954.82/x
  3. Step 3: Cross multiply
    1,290,914.40x = 1,781,484.76 × 717,954.82
  4. Step 4: Simplify right side
    1,290,914.40x = 1,279,025,570,198.54
  5. Step 5: Solve for x
    x = 1,279,025,570,198.54/1,290,914.40
  6. Step 6: Final answer
    x = 990,790.38

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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.