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Finding the Fourth Proportional to 675,121.56, 931,665.42 and 373,315.56

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Solution

The fourth proportional to 675,121.56, 931,665.42 and 373,315.56 is: 515,174.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,121.56 : 931,665.42 = 373,315.56 : x
  2. Step 2: Convert to fraction form
    675,121.56/931,665.42 = 373,315.56/x
  3. Step 3: Cross multiply
    675,121.56x = 931,665.42 × 373,315.56
  4. Step 4: Simplify right side
    675,121.56x = 347,805,197,999.94
  5. Step 5: Solve for x
    x = 347,805,197,999.94/675,121.56
  6. Step 6: Final answer
    x = 515,174.18

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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.