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Finding the Fourth Proportional to 710,014,228.80, 979,800,840.43 and 396,751,016.94

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Solution

The fourth proportional to 710,014,228.80, 979,800,840.43 and 396,751,016.94 is: 547,505,900.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,014,228.80 : 979,800,840.43 = 396,751,016.94 : x
  2. Step 2: Convert to fraction form
    710,014,228.80/979,800,840.43 = 396,751,016.94/x
  3. Step 3: Cross multiply
    710,014,228.80x = 979,800,840.43 × 396,751,016.94
  4. Step 4: Simplify right side
    710,014,228.80x = 388,736,979,839,269,120
  5. Step 5: Solve for x
    x = 388,736,979,839,269,120/710,014,228.80
  6. Step 6: Final answer
    x = 547,505,900.69

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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.