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Finding the Fourth Proportional to 518,418.50, 777,627.76 and 124,434.50

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Solution

The fourth proportional to 518,418.50, 777,627.76 and 124,434.50 is: 186,651.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,418.50 : 777,627.76 = 124,434.50 : x
  2. Step 2: Convert to fraction form
    518,418.50/777,627.76 = 124,434.50/x
  3. Step 3: Cross multiply
    518,418.50x = 777,627.76 × 124,434.50
  4. Step 4: Simplify right side
    518,418.50x = 96,763,721,501.72
  5. Step 5: Solve for x
    x = 96,763,721,501.72/518,418.50
  6. Step 6: Final answer
    x = 186,651.75

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1.5x scale

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.