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Finding the Fourth Proportional to 621,529.43, 930,561.95 and 317,269.07

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Solution

The fourth proportional to 621,529.43, 930,561.95 and 317,269.07 is: 475,019.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,529.43 : 930,561.95 = 317,269.07 : x
  2. Step 2: Convert to fraction form
    621,529.43/930,561.95 = 317,269.07/x
  3. Step 3: Cross multiply
    621,529.43x = 930,561.95 × 317,269.07
  4. Step 4: Simplify right side
    621,529.43x = 295,238,529,318.27
  5. Step 5: Solve for x
    x = 295,238,529,318.27/621,529.43
  6. Step 6: Final answer
    x = 475,019.39

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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.