Home / 2,178,538.74-3,006,172.85-1,260,584.78

Finding the Fourth Proportional to 2,178,538.74, 3,006,172.85 and 1,260,584.78

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Solution

The fourth proportional to 2,178,538.74, 3,006,172.85 and 1,260,584.78 is: 1,739,485.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178,538.74 : 3,006,172.85 = 1,260,584.78 : x
  2. Step 2: Convert to fraction form
    2,178,538.74/3,006,172.85 = 1,260,584.78/x
  3. Step 3: Cross multiply
    2,178,538.74x = 3,006,172.85 × 1,260,584.78
  4. Step 4: Simplify right side
    2,178,538.74x = 3,789,535,719,425.44
  5. Step 5: Solve for x
    x = 3,789,535,719,425.44/2,178,538.74
  6. Step 6: Final answer
    x = 1,739,485.12

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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.