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Finding the Fourth Proportional to 518,063.10, 777,624.70 and 427,818.37

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Solution

The fourth proportional to 518,063.10, 777,624.70 and 427,818.37 is: 642,165.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,063.10 : 777,624.70 = 427,818.37 : x
  2. Step 2: Convert to fraction form
    518,063.10/777,624.70 = 427,818.37/x
  3. Step 3: Cross multiply
    518,063.10x = 777,624.70 × 427,818.37
  4. Step 4: Simplify right side
    518,063.10x = 332,682,131,625.74
  5. Step 5: Solve for x
    x = 332,682,131,625.74/518,063.10
  6. Step 6: Final answer
    x = 642,165.27

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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.