Home / 642,320.88-964,079.10-327,013.80

Finding the Fourth Proportional to 642,320.88, 964,079.10 and 327,013.80

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Solution

The fourth proportional to 642,320.88, 964,079.10 and 327,013.80 is: 490,825.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,320.88 : 964,079.10 = 327,013.80 : x
  2. Step 2: Convert to fraction form
    642,320.88/964,079.10 = 327,013.80/x
  3. Step 3: Cross multiply
    642,320.88x = 964,079.10 × 327,013.80
  4. Step 4: Simplify right side
    642,320.88x = 315,267,166,376.28
  5. Step 5: Solve for x
    x = 315,267,166,376.28/642,320.88
  6. Step 6: Final answer
    x = 490,825.03

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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.