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Finding the Fourth Proportional to 483,947.40, 726,066.90 and 343,979.40

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Solution

The fourth proportional to 483,947.40, 726,066.90 and 343,979.40 is: 516,072.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,947.40 : 726,066.90 = 343,979.40 : x
  2. Step 2: Convert to fraction form
    483,947.40/726,066.90 = 343,979.40/x
  3. Step 3: Cross multiply
    483,947.40x = 726,066.90 × 343,979.40
  4. Step 4: Simplify right side
    483,947.40x = 249,752,056,621.86
  5. Step 5: Solve for x
    x = 249,752,056,621.86/483,947.40
  6. Step 6: Final answer
    x = 516,072.73

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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.