Home / 1,290,635.54-1,781,078.51-717,663.41

Finding the Fourth Proportional to 1,290,635.54, 1,781,078.51 and 717,663.41

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Solution

The fourth proportional to 1,290,635.54, 1,781,078.51 and 717,663.41 is: 990,376.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,635.54 : 1,781,078.51 = 717,663.41 : x
  2. Step 2: Convert to fraction form
    1,290,635.54/1,781,078.51 = 717,663.41/x
  3. Step 3: Cross multiply
    1,290,635.54x = 1,781,078.51 × 717,663.41
  4. Step 4: Simplify right side
    1,290,635.54x = 1,278,214,864,470.61
  5. Step 5: Solve for x
    x = 1,278,214,864,470.61/1,290,635.54
  6. Step 6: Final answer
    x = 990,376.31

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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.