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Finding the Fourth Proportional to 1,979,640.90, 2,969,558.55 and 1,034,856.90

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Solution

The fourth proportional to 1,979,640.90, 2,969,558.55 and 1,034,856.90 is: 1,552,336.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979,640.90 : 2,969,558.55 = 1,034,856.90 : x
  2. Step 2: Convert to fraction form
    1,979,640.90/2,969,558.55 = 1,034,856.90/x
  3. Step 3: Cross multiply
    1,979,640.90x = 2,969,558.55 × 1,034,856.90
  4. Step 4: Simplify right side
    1,979,640.90x = 3,073,068,155,421.50
  5. Step 5: Solve for x
    x = 3,073,068,155,421.50/1,979,640.90
  6. Step 6: Final answer
    x = 1,552,336.16

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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.