Home / 1,290,863.76-1,781,435.88-710,112.48

Finding the Fourth Proportional to 1,290,863.76, 1,781,435.88 and 710,112.48

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Solution

The fourth proportional to 1,290,863.76, 1,781,435.88 and 710,112.48 is: 979,979.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,863.76 : 1,781,435.88 = 710,112.48 : x
  2. Step 2: Convert to fraction form
    1,290,863.76/1,781,435.88 = 710,112.48/x
  3. Step 3: Cross multiply
    1,290,863.76x = 1,781,435.88 × 710,112.48
  4. Step 4: Simplify right side
    1,290,863.76x = 1,265,019,850,707.78
  5. Step 5: Solve for x
    x = 1,265,019,850,707.78/1,290,863.76
  6. Step 6: Final answer
    x = 979,979.37

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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.