Home / 780,764,134.70-1,171,148,939.32-198,498,442.98

Finding the Fourth Proportional to 780,764,134.70, 1,171,148,939.32 and 198,498,442.98

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Solution

The fourth proportional to 780,764,134.70, 1,171,148,939.32 and 198,498,442.98 is: 297,748,360.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,764,134.70 : 1,171,148,939.32 = 198,498,442.98 : x
  2. Step 2: Convert to fraction form
    780,764,134.70/1,171,148,939.32 = 198,498,442.98/x
  3. Step 3: Cross multiply
    780,764,134.70x = 1,171,148,939.32 × 198,498,442.98
  4. Step 4: Simplify right side
    780,764,134.70x = 232,471,240,952,698,464
  5. Step 5: Solve for x
    x = 232,471,240,952,698,464/780,764,134.70
  6. Step 6: Final answer
    x = 297,748,360.38

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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.