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Finding the Fourth Proportional to 911,077.92, 1,366,653.60 and 342,399.60

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Solution

The fourth proportional to 911,077.92, 1,366,653.60 and 342,399.60 is: 513,613.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,077.92 : 1,366,653.60 = 342,399.60 : x
  2. Step 2: Convert to fraction form
    911,077.92/1,366,653.60 = 342,399.60/x
  3. Step 3: Cross multiply
    911,077.92x = 1,366,653.60 × 342,399.60
  4. Step 4: Simplify right side
    911,077.92x = 467,941,645,978.56
  5. Step 5: Solve for x
    x = 467,941,645,978.56/911,077.92
  6. Step 6: Final answer
    x = 513,613.20

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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.