Home / 1,019,138.40-1,528,707.60-419,900.40

Finding the Fourth Proportional to 1,019,138.40, 1,528,707.60 and 419,900.40

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Solution

The fourth proportional to 1,019,138.40, 1,528,707.60 and 419,900.40 is: 629,850.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,019,138.40 : 1,528,707.60 = 419,900.40 : x
  2. Step 2: Convert to fraction form
    1,019,138.40/1,528,707.60 = 419,900.40/x
  3. Step 3: Cross multiply
    1,019,138.40x = 1,528,707.60 × 419,900.40
  4. Step 4: Simplify right side
    1,019,138.40x = 641,904,932,723.04
  5. Step 5: Solve for x
    x = 641,904,932,723.04/1,019,138.40
  6. Step 6: Final answer
    x = 629,850.60

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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.