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Finding the Fourth Proportional to 662,133.70, 993,200.55 and 396,712.90

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Solution

The fourth proportional to 662,133.70, 993,200.55 and 396,712.90 is: 595,069.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,133.70 : 993,200.55 = 396,712.90 : x
  2. Step 2: Convert to fraction form
    662,133.70/993,200.55 = 396,712.90/x
  3. Step 3: Cross multiply
    662,133.70x = 993,200.55 × 396,712.90
  4. Step 4: Simplify right side
    662,133.70x = 394,015,470,472.10
  5. Step 5: Solve for x
    x = 394,015,470,472.10/662,133.70
  6. Step 6: Final answer
    x = 595,069.35

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Double scale
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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.