Home / 1,284,481.56-1,918,909.95-831,512.28

Finding the Fourth Proportional to 1,284,481.56, 1,918,909.95 and 831,512.28

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Solution

The fourth proportional to 1,284,481.56, 1,918,909.95 and 831,512.28 is: 1,242,211.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284,481.56 : 1,918,909.95 = 831,512.28 : x
  2. Step 2: Convert to fraction form
    1,284,481.56/1,918,909.95 = 831,512.28/x
  3. Step 3: Cross multiply
    1,284,481.56x = 1,918,909.95 × 831,512.28
  4. Step 4: Simplify right side
    1,284,481.56x = 1,595,597,187,639.19
  5. Step 5: Solve for x
    x = 1,595,597,187,639.19/1,284,481.56
  6. Step 6: Final answer
    x = 1,242,211.05

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.