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Finding the Fourth Proportional to 626,704.56, 940,359.72 and 389,985.84

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Solution

The fourth proportional to 626,704.56, 940,359.72 and 389,985.84 is: 585,167.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,704.56 : 940,359.72 = 389,985.84 : x
  2. Step 2: Convert to fraction form
    626,704.56/940,359.72 = 389,985.84/x
  3. Step 3: Cross multiply
    626,704.56x = 940,359.72 × 389,985.84
  4. Step 4: Simplify right side
    626,704.56x = 366,726,975,306.37
  5. Step 5: Solve for x
    x = 366,726,975,306.37/626,704.56
  6. Step 6: Final answer
    x = 585,167.24

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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.