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Finding the Fourth Proportional to 518,295.80, 777,789.30 and 293,655.80

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Solution

The fourth proportional to 518,295.80, 777,789.30 and 293,655.80 is: 440,679.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,295.80 : 777,789.30 = 293,655.80 : x
  2. Step 2: Convert to fraction form
    518,295.80/777,789.30 = 293,655.80/x
  3. Step 3: Cross multiply
    518,295.80x = 777,789.30 × 293,655.80
  4. Step 4: Simplify right side
    518,295.80x = 228,402,339,122.94
  5. Step 5: Solve for x
    x = 228,402,339,122.94/518,295.80
  6. Step 6: Final answer
    x = 440,679.51

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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.