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Finding the Fourth Proportional to 608,979.60, 911,719.80 and 372,783.60

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Solution

The fourth proportional to 608,979.60, 911,719.80 and 372,783.60 is: 558,104.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,979.60 : 911,719.80 = 372,783.60 : x
  2. Step 2: Convert to fraction form
    608,979.60/911,719.80 = 372,783.60/x
  3. Step 3: Cross multiply
    608,979.60x = 911,719.80 × 372,783.60
  4. Step 4: Simplify right side
    608,979.60x = 339,874,189,235.28
  5. Step 5: Solve for x
    x = 339,874,189,235.28/608,979.60
  6. Step 6: Final answer
    x = 558,104.39

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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.