Home / 709,260,108.12-978,780,847.23-396,005,531.27

Finding the Fourth Proportional to 709,260,108.12, 978,780,847.23 and 396,005,531.27

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Solution

The fourth proportional to 709,260,108.12, 978,780,847.23 and 396,005,531.27 is: 546,488,692.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,260,108.12 : 978,780,847.23 = 396,005,531.27 : x
  2. Step 2: Convert to fraction form
    709,260,108.12/978,780,847.23 = 396,005,531.27/x
  3. Step 3: Cross multiply
    709,260,108.12x = 978,780,847.23 × 396,005,531.27
  4. Step 4: Simplify right side
    709,260,108.12x = 387,602,629,399,322,944
  5. Step 5: Solve for x
    x = 387,602,629,399,322,944/709,260,108.12
  6. Step 6: Final answer
    x = 546,488,692.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.