Home / 1,275,906.40-1,913,859.60-518,110.90

Finding the Fourth Proportional to 1,275,906.40, 1,913,859.60 and 518,110.90

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Solution

The fourth proportional to 1,275,906.40, 1,913,859.60 and 518,110.90 is: 777,166.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275,906.40 : 1,913,859.60 = 518,110.90 : x
  2. Step 2: Convert to fraction form
    1,275,906.40/1,913,859.60 = 518,110.90/x
  3. Step 3: Cross multiply
    1,275,906.40x = 1,913,859.60 × 518,110.90
  4. Step 4: Simplify right side
    1,275,906.40x = 991,591,519,829.64
  5. Step 5: Solve for x
    x = 991,591,519,829.64/1,275,906.40
  6. Step 6: Final answer
    x = 777,166.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.