Home / 420,880,918.31-580,792,238.92-232,698,332.71

Finding the Fourth Proportional to 420,880,918.31, 580,792,238.92 and 232,698,332.71

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Solution

The fourth proportional to 420,880,918.31, 580,792,238.92 and 232,698,332.71 is: 321,110,745.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,880,918.31 : 580,792,238.92 = 232,698,332.71 : x
  2. Step 2: Convert to fraction form
    420,880,918.31/580,792,238.92 = 232,698,332.71/x
  3. Step 3: Cross multiply
    420,880,918.31x = 580,792,238.92 × 232,698,332.71
  4. Step 4: Simplify right side
    420,880,918.31x = 135,149,385,647,591,968
  5. Step 5: Solve for x
    x = 135,149,385,647,591,968/420,880,918.31
  6. Step 6: Final answer
    x = 321,110,745.98

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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.