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Finding the Fourth Proportional to 540,407.36, 809,955.59 and 396,922.19

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Solution

The fourth proportional to 540,407.36, 809,955.59 and 396,922.19 is: 594,901.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,407.36 : 809,955.59 = 396,922.19 : x
  2. Step 2: Convert to fraction form
    540,407.36/809,955.59 = 396,922.19/x
  3. Step 3: Cross multiply
    540,407.36x = 809,955.59 × 396,922.19
  4. Step 4: Simplify right side
    540,407.36x = 321,489,340,551.15
  5. Step 5: Solve for x
    x = 321,489,340,551.15/540,407.36
  6. Step 6: Final answer
    x = 594,901.86

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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.