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Finding the Fourth Proportional to 547,364.60, 821,046.90 and 323,415.80

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Solution

The fourth proportional to 547,364.60, 821,046.90 and 323,415.80 is: 485,123.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,364.60 : 821,046.90 = 323,415.80 : x
  2. Step 2: Convert to fraction form
    547,364.60/821,046.90 = 323,415.80/x
  3. Step 3: Cross multiply
    547,364.60x = 821,046.90 × 323,415.80
  4. Step 4: Simplify right side
    547,364.60x = 265,539,540,001.02
  5. Step 5: Solve for x
    x = 265,539,540,001.02/547,364.60
  6. Step 6: Final answer
    x = 485,123.70

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Similar ratio
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1.5x scale

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.