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Finding the Fourth Proportional to 496,715.69, 685,448.63 and 281,842.94

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Solution

The fourth proportional to 496,715.69, 685,448.63 and 281,842.94 is: 388,932.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,715.69 : 685,448.63 = 281,842.94 : x
  2. Step 2: Convert to fraction form
    496,715.69/685,448.63 = 281,842.94/x
  3. Step 3: Cross multiply
    496,715.69x = 685,448.63 × 281,842.94
  4. Step 4: Simplify right side
    496,715.69x = 193,188,858,459.49
  5. Step 5: Solve for x
    x = 193,188,858,459.49/496,715.69
  6. Step 6: Final answer
    x = 388,932.46

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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.