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Finding the Fourth Proportional to 547,928.54, 755,651.80 and 343,998.47

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Solution

The fourth proportional to 547,928.54, 755,651.80 and 343,998.47 is: 474,410.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,928.54 : 755,651.80 = 343,998.47 : x
  2. Step 2: Convert to fraction form
    547,928.54/755,651.80 = 343,998.47/x
  3. Step 3: Cross multiply
    547,928.54x = 755,651.80 × 343,998.47
  4. Step 4: Simplify right side
    547,928.54x = 259,943,063,052.75
  5. Step 5: Solve for x
    x = 259,943,063,052.75/547,928.54
  6. Step 6: Final answer
    x = 474,410.52

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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.