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Finding the Fourth Proportional to 618,323.78, 927,487.75 and 218,976.21

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Solution

The fourth proportional to 618,323.78, 927,487.75 and 218,976.21 is: 328,465.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,323.78 : 927,487.75 = 218,976.21 : x
  2. Step 2: Convert to fraction form
    618,323.78/927,487.75 = 218,976.21/x
  3. Step 3: Cross multiply
    618,323.78x = 927,487.75 × 218,976.21
  4. Step 4: Simplify right side
    618,323.78x = 203,097,752,179.57
  5. Step 5: Solve for x
    x = 203,097,752,179.57/618,323.78
  6. Step 6: Final answer
    x = 328,465.05

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1.5x scale

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.