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Finding the Fourth Proportional to 413,655.27, 621,007.92 and 351,719.43

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Solution

The fourth proportional to 413,655.27, 621,007.92 and 351,719.43 is: 528,025.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,655.27 : 621,007.92 = 351,719.43 : x
  2. Step 2: Convert to fraction form
    413,655.27/621,007.92 = 351,719.43/x
  3. Step 3: Cross multiply
    413,655.27x = 621,007.92 × 351,719.43
  4. Step 4: Simplify right side
    413,655.27x = 218,420,551,647.89
  5. Step 5: Solve for x
    x = 218,420,551,647.89/413,655.27
  6. Step 6: Final answer
    x = 528,025.55

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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.