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Finding the Fourth Proportional to 642,450.72, 886,558.08 and 370,530

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Solution

The fourth proportional to 642,450.72, 886,558.08 and 370,530 is: 511,317.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,450.72 : 886,558.08 = 370,530 : x
  2. Step 2: Convert to fraction form
    642,450.72/886,558.08 = 370,530/x
  3. Step 3: Cross multiply
    642,450.72x = 886,558.08 × 370,530
  4. Step 4: Simplify right side
    642,450.72x = 328,496,365,382.40
  5. Step 5: Solve for x
    x = 328,496,365,382.40/642,450.72
  6. Step 6: Final answer
    x = 511,317.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.