Home / 861,388,137.27-1,188,709,582.82-470,247,561.27

Finding the Fourth Proportional to 861,388,137.27, 1,188,709,582.82 and 470,247,561.27

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Solution

The fourth proportional to 861,388,137.27, 1,188,709,582.82 and 470,247,561.27 is: 648,938,333.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,388,137.27 : 1,188,709,582.82 = 470,247,561.27 : x
  2. Step 2: Convert to fraction form
    861,388,137.27/1,188,709,582.82 = 470,247,561.27/x
  3. Step 3: Cross multiply
    861,388,137.27x = 1,188,709,582.82 × 470,247,561.27
  4. Step 4: Simplify right side
    861,388,137.27x = 558,987,782,377,032,832
  5. Step 5: Solve for x
    x = 558,987,782,377,032,832/861,388,137.27
  6. Step 6: Final answer
    x = 648,938,333.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.