Home / 405,045,478.10-558,965,441.94-219,406,493.18

Finding the Fourth Proportional to 405,045,478.10, 558,965,441.94 and 219,406,493.18

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Solution

The fourth proportional to 405,045,478.10, 558,965,441.94 and 219,406,493.18 is: 302,782,413.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,045,478.10 : 558,965,441.94 = 219,406,493.18 : x
  2. Step 2: Convert to fraction form
    405,045,478.10/558,965,441.94 = 219,406,493.18/x
  3. Step 3: Cross multiply
    405,045,478.10x = 558,965,441.94 × 219,406,493.18
  4. Step 4: Simplify right side
    405,045,478.10x = 122,640,647,424,864,320
  5. Step 5: Solve for x
    x = 122,640,647,424,864,320/405,045,478.10
  6. Step 6: Final answer
    x = 302,782,413.47

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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.