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Finding the Fourth Proportional to 547,410.81, 755,261.82 and 317,923.86

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Solution

The fourth proportional to 547,410.81, 755,261.82 and 317,923.86 is: 438,639.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,410.81 : 755,261.82 = 317,923.86 : x
  2. Step 2: Convert to fraction form
    547,410.81/755,261.82 = 317,923.86/x
  3. Step 3: Cross multiply
    547,410.81x = 755,261.82 × 317,923.86
  4. Step 4: Simplify right side
    547,410.81x = 240,115,753,125.03
  5. Step 5: Solve for x
    x = 240,115,753,125.03/547,410.81
  6. Step 6: Final answer
    x = 438,639.04

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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.