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Finding the Fourth Proportional to 693,369.71, 956,945.23 and 399,013.37

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Solution

The fourth proportional to 693,369.71, 956,945.23 and 399,013.37 is: 550,693.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,369.71 : 956,945.23 = 399,013.37 : x
  2. Step 2: Convert to fraction form
    693,369.71/956,945.23 = 399,013.37/x
  3. Step 3: Cross multiply
    693,369.71x = 956,945.23 × 399,013.37
  4. Step 4: Simplify right side
    693,369.71x = 381,833,942,522.56
  5. Step 5: Solve for x
    x = 381,833,942,522.56/693,369.71
  6. Step 6: Final answer
    x = 550,693.14

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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.