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Finding the Fourth Proportional to 547,286.88, 755,056.44 and 320,888.64

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Solution

The fourth proportional to 547,286.88, 755,056.44 and 320,888.64 is: 442,709.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,286.88 : 755,056.44 = 320,888.64 : x
  2. Step 2: Convert to fraction form
    547,286.88/755,056.44 = 320,888.64/x
  3. Step 3: Cross multiply
    547,286.88x = 755,056.44 × 320,888.64
  4. Step 4: Simplify right side
    547,286.88x = 242,289,034,154.84
  5. Step 5: Solve for x
    x = 242,289,034,154.84/547,286.88
  6. Step 6: Final answer
    x = 442,709.38

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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.