Home / 915,781.85-1,263,856.59-508,015.05

Finding the Fourth Proportional to 915,781.85, 1,263,856.59 and 508,015.05

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Solution

The fourth proportional to 915,781.85, 1,263,856.59 and 508,015.05 is: 701,103.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,781.85 : 1,263,856.59 = 508,015.05 : x
  2. Step 2: Convert to fraction form
    915,781.85/1,263,856.59 = 508,015.05/x
  3. Step 3: Cross multiply
    915,781.85x = 1,263,856.59 × 508,015.05
  4. Step 4: Simplify right side
    915,781.85x = 642,058,168,761.68
  5. Step 5: Solve for x
    x = 642,058,168,761.68/915,781.85
  6. Step 6: Final answer
    x = 701,103.84

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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.