Home / 426,352,334.71-639,589,507.88-131,272,421.60

Finding the Fourth Proportional to 426,352,334.71, 639,589,507.88 and 131,272,421.60

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Solution

The fourth proportional to 426,352,334.71, 639,589,507.88 and 131,272,421.60 is: 196,927,415.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,352,334.71 : 639,589,507.88 = 131,272,421.60 : x
  2. Step 2: Convert to fraction form
    426,352,334.71/639,589,507.88 = 131,272,421.60/x
  3. Step 3: Cross multiply
    426,352,334.71x = 639,589,507.88 × 131,272,421.60
  4. Step 4: Simplify right side
    426,352,334.71x = 83,960,463,529,135,360
  5. Step 5: Solve for x
    x = 83,960,463,529,135,360/426,352,334.71
  6. Step 6: Final answer
    x = 196,927,415.88

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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.