Home / 426,492,051.70-639,738,077.55-196,909,539.70

Finding the Fourth Proportional to 426,492,051.70, 639,738,077.55 and 196,909,539.70

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Solution

The fourth proportional to 426,492,051.70, 639,738,077.55 and 196,909,539.70 is: 295,364,309.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,492,051.70 : 639,738,077.55 = 196,909,539.70 : x
  2. Step 2: Convert to fraction form
    426,492,051.70/639,738,077.55 = 196,909,539.70/x
  3. Step 3: Cross multiply
    426,492,051.70x = 639,738,077.55 × 196,909,539.70
  4. Step 4: Simplify right side
    426,492,051.70x = 125,970,530,378,933,392
  5. Step 5: Solve for x
    x = 125,970,530,378,933,392/426,492,051.70
  6. Step 6: Final answer
    x = 295,364,309.55

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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.