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Finding the Fourth Proportional to 518,600.53, 777,893.06 and 316,256.09

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Solution

The fourth proportional to 518,600.53, 777,893.06 and 316,256.09 is: 474,379.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,600.53 : 777,893.06 = 316,256.09 : x
  2. Step 2: Convert to fraction form
    518,600.53/777,893.06 = 316,256.09/x
  3. Step 3: Cross multiply
    518,600.53x = 777,893.06 × 316,256.09
  4. Step 4: Simplify right side
    518,600.53x = 246,013,417,593.74
  5. Step 5: Solve for x
    x = 246,013,417,593.74/518,600.53
  6. Step 6: Final answer
    x = 474,379.42

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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.