Home / 644,321.20-966,481.80-495,313.60

Finding the Fourth Proportional to 644,321.20, 966,481.80 and 495,313.60

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Solution

The fourth proportional to 644,321.20, 966,481.80 and 495,313.60 is: 742,970.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,321.20 : 966,481.80 = 495,313.60 : x
  2. Step 2: Convert to fraction form
    644,321.20/966,481.80 = 495,313.60/x
  3. Step 3: Cross multiply
    644,321.20x = 966,481.80 × 495,313.60
  4. Step 4: Simplify right side
    644,321.20x = 478,711,579,692.48
  5. Step 5: Solve for x
    x = 478,711,579,692.48/644,321.20
  6. Step 6: Final answer
    x = 742,970.40

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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.