Home / 664,305,986.40-996,458,979.60-492,119,102.40

Finding the Fourth Proportional to 664,305,986.40, 996,458,979.60 and 492,119,102.40

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Solution

The fourth proportional to 664,305,986.40, 996,458,979.60 and 492,119,102.40 is: 738,178,653.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,305,986.40 : 996,458,979.60 = 492,119,102.40 : x
  2. Step 2: Convert to fraction form
    664,305,986.40/996,458,979.60 = 492,119,102.40/x
  3. Step 3: Cross multiply
    664,305,986.40x = 996,458,979.60 × 492,119,102.40
  4. Step 4: Simplify right side
    664,305,986.40x = 490,376,498,619,171,904
  5. Step 5: Solve for x
    x = 490,376,498,619,171,904/664,305,986.40
  6. Step 6: Final answer
    x = 738,178,653.60

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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.