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Finding the Fourth Proportional to 548,905.60, 823,358.40 and 389,473.30

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Solution

The fourth proportional to 548,905.60, 823,358.40 and 389,473.30 is: 584,209.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,905.60 : 823,358.40 = 389,473.30 : x
  2. Step 2: Convert to fraction form
    548,905.60/823,358.40 = 389,473.30/x
  3. Step 3: Cross multiply
    548,905.60x = 823,358.40 × 389,473.30
  4. Step 4: Simplify right side
    548,905.60x = 320,676,113,130.72
  5. Step 5: Solve for x
    x = 320,676,113,130.72/548,905.60
  6. Step 6: Final answer
    x = 584,209.95

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Similar ratio
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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.