Home / 489,640,082.96-734,557,046.04-139,889,126.80

Finding the Fourth Proportional to 489,640,082.96, 734,557,046.04 and 139,889,126.80

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Solution

The fourth proportional to 489,640,082.96, 734,557,046.04 and 139,889,126.80 is: 209,861,380.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,640,082.96 : 734,557,046.04 = 139,889,126.80 : x
  2. Step 2: Convert to fraction form
    489,640,082.96/734,557,046.04 = 139,889,126.80/x
  3. Step 3: Cross multiply
    489,640,082.96x = 734,557,046.04 × 139,889,126.80
  4. Step 4: Simplify right side
    489,640,082.96x = 102,756,543,755,323,008
  5. Step 5: Solve for x
    x = 102,756,543,755,323,008/489,640,082.96
  6. Step 6: Final answer
    x = 209,861,380.49

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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.