Home / 642,822.40-964,233.60-199,590.40

Finding the Fourth Proportional to 642,822.40, 964,233.60 and 199,590.40

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Solution

The fourth proportional to 642,822.40, 964,233.60 and 199,590.40 is: 299,385.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,822.40 : 964,233.60 = 199,590.40 : x
  2. Step 2: Convert to fraction form
    642,822.40/964,233.60 = 199,590.40/x
  3. Step 3: Cross multiply
    642,822.40x = 964,233.60 × 199,590.40
  4. Step 4: Simplify right side
    642,822.40x = 192,451,769,917.44
  5. Step 5: Solve for x
    x = 192,451,769,917.44/642,822.40
  6. Step 6: Final answer
    x = 299,385.60

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Half scale
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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.