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Finding the Fourth Proportional to 518,329.20, 777,599.43 and 293,789.91

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Solution

The fourth proportional to 518,329.20, 777,599.43 and 293,789.91 is: 440,744.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,329.20 : 777,599.43 = 293,789.91 : x
  2. Step 2: Convert to fraction form
    518,329.20/777,599.43 = 293,789.91/x
  3. Step 3: Cross multiply
    518,329.20x = 777,599.43 × 293,789.91
  4. Step 4: Simplify right side
    518,329.20x = 228,450,866,555.75
  5. Step 5: Solve for x
    x = 228,450,866,555.75/518,329.20
  6. Step 6: Final answer
    x = 440,744.74

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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.