Home / 685,382.31-945,926.91-394,937.37

Finding the Fourth Proportional to 685,382.31, 945,926.91 and 394,937.37

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Solution

The fourth proportional to 685,382.31, 945,926.91 and 394,937.37 is: 545,070.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,382.31 : 945,926.91 = 394,937.37 : x
  2. Step 2: Convert to fraction form
    685,382.31/945,926.91 = 394,937.37/x
  3. Step 3: Cross multiply
    685,382.31x = 945,926.91 × 394,937.37
  4. Step 4: Simplify right side
    685,382.31x = 373,581,886,047.63
  5. Step 5: Solve for x
    x = 373,581,886,047.63/685,382.31
  6. Step 6: Final answer
    x = 545,070.80

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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.