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Finding the Fourth Proportional to 674,269.96, 930,520.89 and 387,790.33

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Solution

The fourth proportional to 674,269.96, 930,520.89 and 387,790.33 is: 535,166.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,269.96 : 930,520.89 = 387,790.33 : x
  2. Step 2: Convert to fraction form
    674,269.96/930,520.89 = 387,790.33/x
  3. Step 3: Cross multiply
    674,269.96x = 930,520.89 × 387,790.33
  4. Step 4: Simplify right side
    674,269.96x = 360,847,003,004.99
  5. Step 5: Solve for x
    x = 360,847,003,004.99/674,269.96
  6. Step 6: Final answer
    x = 535,166.96

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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.