Home / 786,432,489.72-1,179,840,798.78-261,800,578.14

Finding the Fourth Proportional to 786,432,489.72, 1,179,840,798.78 and 261,800,578.14

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Solution

The fourth proportional to 786,432,489.72, 1,179,840,798.78 and 261,800,578.14 is: 392,764,804.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,432,489.72 : 1,179,840,798.78 = 261,800,578.14 : x
  2. Step 2: Convert to fraction form
    786,432,489.72/1,179,840,798.78 = 261,800,578.14/x
  3. Step 3: Cross multiply
    786,432,489.72x = 1,179,840,798.78 × 261,800,578.14
  4. Step 4: Simplify right side
    786,432,489.72x = 308,883,003,233,763,392
  5. Step 5: Solve for x
    x = 308,883,003,233,763,392/786,432,489.72
  6. Step 6: Final answer
    x = 392,764,804.70

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Double scale
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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.