Home / 426,377,457.87-639,627,109.34-131,297,503.47

Finding the Fourth Proportional to 426,377,457.87, 639,627,109.34 and 131,297,503.47

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Solution

The fourth proportional to 426,377,457.87, 639,627,109.34 and 131,297,503.47 is: 196,965,015.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,377,457.87 : 639,627,109.34 = 131,297,503.47 : x
  2. Step 2: Convert to fraction form
    426,377,457.87/639,627,109.34 = 131,297,503.47/x
  3. Step 3: Cross multiply
    426,377,457.87x = 639,627,109.34 × 131,297,503.47
  4. Step 4: Simplify right side
    426,377,457.87x = 83,981,442,607,418,240
  5. Step 5: Solve for x
    x = 83,981,442,607,418,240/426,377,457.87
  6. Step 6: Final answer
    x = 196,965,015.52

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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.