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Finding the Fourth Proportional to 518,310.80, 777,811.80 and 293,670.80

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Solution

The fourth proportional to 518,310.80, 777,811.80 and 293,670.80 is: 440,702.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,310.80 : 777,811.80 = 293,670.80 : x
  2. Step 2: Convert to fraction form
    518,310.80/777,811.80 = 293,670.80/x
  3. Step 3: Cross multiply
    518,310.80x = 777,811.80 × 293,670.80
  4. Step 4: Simplify right side
    518,310.80x = 228,420,613,555.44
  5. Step 5: Solve for x
    x = 228,420,613,555.44/518,310.80
  6. Step 6: Final answer
    x = 440,702.01

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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.