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Finding the Fourth Proportional to 667,102.74, 920,584.71 and 372,754.81

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Solution

The fourth proportional to 667,102.74, 920,584.71 and 372,754.81 is: 514,392.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,102.74 : 920,584.71 = 372,754.81 : x
  2. Step 2: Convert to fraction form
    667,102.74/920,584.71 = 372,754.81/x
  3. Step 3: Cross multiply
    667,102.74x = 920,584.71 × 372,754.81
  4. Step 4: Simplify right side
    667,102.74x = 343,152,378,664.96
  5. Step 5: Solve for x
    x = 343,152,378,664.96/667,102.74
  6. Step 6: Final answer
    x = 514,392.10

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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.