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Finding the Fourth Proportional to 685,535.72, 946,027.67 and 379,605.56

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Solution

The fourth proportional to 685,535.72, 946,027.67 and 379,605.56 is: 523,849.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,535.72 : 946,027.67 = 379,605.56 : x
  2. Step 2: Convert to fraction form
    685,535.72/946,027.67 = 379,605.56/x
  3. Step 3: Cross multiply
    685,535.72x = 946,027.67 × 379,605.56
  4. Step 4: Simplify right side
    685,535.72x = 359,117,356,817.68
  5. Step 5: Solve for x
    x = 359,117,356,817.68/685,535.72
  6. Step 6: Final answer
    x = 523,849.23

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1.5x scale

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.