Home / 426,630,427.42-639,945,642.66-119,922,540.30

Finding the Fourth Proportional to 426,630,427.42, 639,945,642.66 and 119,922,540.30

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Solution

The fourth proportional to 426,630,427.42, 639,945,642.66 and 119,922,540.30 is: 179,883,810.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,630,427.42 : 639,945,642.66 = 119,922,540.30 : x
  2. Step 2: Convert to fraction form
    426,630,427.42/639,945,642.66 = 119,922,540.30/x
  3. Step 3: Cross multiply
    426,630,427.42x = 639,945,642.66 × 119,922,540.30
  4. Step 4: Simplify right side
    426,630,427.42x = 76,743,907,121,703,248
  5. Step 5: Solve for x
    x = 76,743,907,121,703,248/426,630,427.42
  6. Step 6: Final answer
    x = 179,883,810.88

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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.