Home / 1,290,908.10-1,936,362.15-818,127.30

Finding the Fourth Proportional to 1,290,908.10, 1,936,362.15 and 818,127.30

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Solution

The fourth proportional to 1,290,908.10, 1,936,362.15 and 818,127.30 is: 1,227,190.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,908.10 : 1,936,362.15 = 818,127.30 : x
  2. Step 2: Convert to fraction form
    1,290,908.10/1,936,362.15 = 818,127.30/x
  3. Step 3: Cross multiply
    1,290,908.10x = 1,936,362.15 × 818,127.30
  4. Step 4: Simplify right side
    1,290,908.10x = 1,584,190,737,601.70
  5. Step 5: Solve for x
    x = 1,584,190,737,601.70/1,290,908.10
  6. Step 6: Final answer
    x = 1,227,190.95

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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.