Home / 1,284,480.56-1,918,908.46-831,511.28

Finding the Fourth Proportional to 1,284,480.56, 1,918,908.46 and 831,511.28

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Solution

The fourth proportional to 1,284,480.56, 1,918,908.46 and 831,511.28 is: 1,242,209.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284,480.56 : 1,918,908.46 = 831,511.28 : x
  2. Step 2: Convert to fraction form
    1,284,480.56/1,918,908.46 = 831,511.28/x
  3. Step 3: Cross multiply
    1,284,480.56x = 1,918,908.46 × 831,511.28
  4. Step 4: Simplify right side
    1,284,480.56x = 1,595,594,029,777.43
  5. Step 5: Solve for x
    x = 1,595,594,029,777.43/1,284,480.56
  6. Step 6: Final answer
    x = 1,242,209.56

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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.