Home / 1,188,921,807.60-1,783,382,711.40-412,309,359.60

Finding the Fourth Proportional to 1,188,921,807.60, 1,783,382,711.40 and 412,309,359.60

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Solution

The fourth proportional to 1,188,921,807.60, 1,783,382,711.40 and 412,309,359.60 is: 618,464,039.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,921,807.60 : 1,783,382,711.40 = 412,309,359.60 : x
  2. Step 2: Convert to fraction form
    1,188,921,807.60/1,783,382,711.40 = 412,309,359.60/x
  3. Step 3: Cross multiply
    1,188,921,807.60x = 1,783,382,711.40 × 412,309,359.60
  4. Step 4: Simplify right side
    1,188,921,807.60x = 735,305,383,659,045,760
  5. Step 5: Solve for x
    x = 735,305,383,659,045,760/1,188,921,807.60
  6. Step 6: Final answer
    x = 618,464,039.40

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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.