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Finding the Fourth Proportional to 547,439.36, 755,356.73 and 305,684.73

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Solution

The fourth proportional to 547,439.36, 755,356.73 and 305,684.73 is: 421,783.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,439.36 : 755,356.73 = 305,684.73 : x
  2. Step 2: Convert to fraction form
    547,439.36/755,356.73 = 305,684.73/x
  3. Step 3: Cross multiply
    547,439.36x = 755,356.73 × 305,684.73
  4. Step 4: Simplify right side
    547,439.36x = 230,901,016,535.31
  5. Step 5: Solve for x
    x = 230,901,016,535.31/547,439.36
  6. Step 6: Final answer
    x = 421,783.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.