Home / 2,783,407.20-4,172,680.80-1,078,713.60

Finding the Fourth Proportional to 2,783,407.20, 4,172,680.80 and 1,078,713.60

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Solution

The fourth proportional to 2,783,407.20, 4,172,680.80 and 1,078,713.60 is: 1,617,128.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,783,407.20 : 4,172,680.80 = 1,078,713.60 : x
  2. Step 2: Convert to fraction form
    2,783,407.20/4,172,680.80 = 1,078,713.60/x
  3. Step 3: Cross multiply
    2,783,407.20x = 4,172,680.80 × 1,078,713.60
  4. Step 4: Simplify right side
    2,783,407.20x = 4,501,127,527,418.88
  5. Step 5: Solve for x
    x = 4,501,127,527,418.88/2,783,407.20
  6. Step 6: Final answer
    x = 1,617,128.65

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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.