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Finding the Fourth Proportional to 518,590, 777,885 and 124,606

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Solution

The fourth proportional to 518,590, 777,885 and 124,606 is: 186,909

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,590 : 777,885 = 124,606 : x
  2. Step 2: Convert to fraction form
    518,590/777,885 = 124,606/x
  3. Step 3: Cross multiply
    518,590x = 777,885 × 124,606
  4. Step 4: Simplify right side
    518,590x = 96,929,138,310
  5. Step 5: Solve for x
    x = 96,929,138,310/518,590
  6. Step 6: Final answer
    x = 186,909

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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.