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Finding the Fourth Proportional to 518,417, 777,625.50 and 124,433

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Solution

The fourth proportional to 518,417, 777,625.50 and 124,433 is: 186,649.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,417 : 777,625.50 = 124,433 : x
  2. Step 2: Convert to fraction form
    518,417/777,625.50 = 124,433/x
  3. Step 3: Cross multiply
    518,417x = 777,625.50 × 124,433
  4. Step 4: Simplify right side
    518,417x = 96,762,273,841.50
  5. Step 5: Solve for x
    x = 96,762,273,841.50/518,417
  6. Step 6: Final answer
    x = 186,649.50

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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.