Home / 1,152,016.80-1,728,025.20-404,138.40

Finding the Fourth Proportional to 1,152,016.80, 1,728,025.20 and 404,138.40

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Solution

The fourth proportional to 1,152,016.80, 1,728,025.20 and 404,138.40 is: 606,207.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,152,016.80 : 1,728,025.20 = 404,138.40 : x
  2. Step 2: Convert to fraction form
    1,152,016.80/1,728,025.20 = 404,138.40/x
  3. Step 3: Cross multiply
    1,152,016.80x = 1,728,025.20 × 404,138.40
  4. Step 4: Simplify right side
    1,152,016.80x = 698,361,339,487.68
  5. Step 5: Solve for x
    x = 698,361,339,487.68/1,152,016.80
  6. Step 6: Final answer
    x = 606,207.60

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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.