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Finding the Fourth Proportional to 518,310.55, 777,811.43 and 293,670.55

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Solution

The fourth proportional to 518,310.55, 777,811.43 and 293,670.55 is: 440,701.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,310.55 : 777,811.43 = 293,670.55 : x
  2. Step 2: Convert to fraction form
    518,310.55/777,811.43 = 293,670.55/x
  3. Step 3: Cross multiply
    518,310.55x = 777,811.43 × 293,670.55
  4. Step 4: Simplify right side
    518,310.55x = 228,420,310,444.39
  5. Step 5: Solve for x
    x = 228,420,310,444.39/518,310.55
  6. Step 6: Final answer
    x = 440,701.64

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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.