Home / 726,067.40-1,089,101.10-411,139.40

Finding the Fourth Proportional to 726,067.40, 1,089,101.10 and 411,139.40

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Solution

The fourth proportional to 726,067.40, 1,089,101.10 and 411,139.40 is: 616,709.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,067.40 : 1,089,101.10 = 411,139.40 : x
  2. Step 2: Convert to fraction form
    726,067.40/1,089,101.10 = 411,139.40/x
  3. Step 3: Cross multiply
    726,067.40x = 1,089,101.10 × 411,139.40
  4. Step 4: Simplify right side
    726,067.40x = 447,772,372,793.34
  5. Step 5: Solve for x
    x = 447,772,372,793.34/726,067.40
  6. Step 6: Final answer
    x = 616,709.10

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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.