Home / 1,189,105.71-1,783,594.92-420,550.17

Finding the Fourth Proportional to 1,189,105.71, 1,783,594.92 and 420,550.17

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Solution

The fourth proportional to 1,189,105.71, 1,783,594.92 and 420,550.17 is: 630,802.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,105.71 : 1,783,594.92 = 420,550.17 : x
  2. Step 2: Convert to fraction form
    1,189,105.71/1,783,594.92 = 420,550.17/x
  3. Step 3: Cross multiply
    1,189,105.71x = 1,783,594.92 × 420,550.17
  4. Step 4: Simplify right side
    1,189,105.71x = 750,091,146,817.14
  5. Step 5: Solve for x
    x = 750,091,146,817.14/1,189,105.71
  6. Step 6: Final answer
    x = 630,802.75

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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.