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Finding the Fourth Proportional to 642,670.32, 886,850.88 and 370,722

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Solution

The fourth proportional to 642,670.32, 886,850.88 and 370,722 is: 511,576.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,670.32 : 886,850.88 = 370,722 : x
  2. Step 2: Convert to fraction form
    642,670.32/886,850.88 = 370,722/x
  3. Step 3: Cross multiply
    642,670.32x = 886,850.88 × 370,722
  4. Step 4: Simplify right side
    642,670.32x = 328,775,131,935.36
  5. Step 5: Solve for x
    x = 328,775,131,935.36/642,670.32
  6. Step 6: Final answer
    x = 511,576.65

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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.