Home / 489,639,936-675,703,111.68-269,622,837.12

Finding the Fourth Proportional to 489,639,936, 675,703,111.68 and 269,622,837.12

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Solution

The fourth proportional to 489,639,936, 675,703,111.68 and 269,622,837.12 is: 372,079,515.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,639,936 : 675,703,111.68 = 269,622,837.12 : x
  2. Step 2: Convert to fraction form
    489,639,936/675,703,111.68 = 269,622,837.12/x
  3. Step 3: Cross multiply
    489,639,936x = 675,703,111.68 × 269,622,837.12
  4. Step 4: Simplify right side
    489,639,936x = 182,184,990,021,973,792
  5. Step 5: Solve for x
    x = 182,184,990,021,973,792/489,639,936
  6. Step 6: Final answer
    x = 372,079,515.23

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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.