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Finding the Fourth Proportional to 496,534.89, 685,231.47 and 281,707.23

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Solution

The fourth proportional to 496,534.89, 685,231.47 and 281,707.23 is: 388,763.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,534.89 : 685,231.47 = 281,707.23 : x
  2. Step 2: Convert to fraction form
    496,534.89/685,231.47 = 281,707.23/x
  3. Step 3: Cross multiply
    496,534.89x = 685,231.47 × 281,707.23
  4. Step 4: Simplify right side
    496,534.89x = 193,034,659,322.53
  5. Step 5: Solve for x
    x = 193,034,659,322.53/496,534.89
  6. Step 6: Final answer
    x = 388,763.54

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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.