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Finding the Fourth Proportional to 678,360.52, 936,163.84 and 372,449.79

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Solution

The fourth proportional to 678,360.52, 936,163.84 and 372,449.79 is: 513,995.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,360.52 : 936,163.84 = 372,449.79 : x
  2. Step 2: Convert to fraction form
    678,360.52/936,163.84 = 372,449.79/x
  3. Step 3: Cross multiply
    678,360.52x = 936,163.84 × 372,449.79
  4. Step 4: Simplify right side
    678,360.52x = 348,674,025,613.59
  5. Step 5: Solve for x
    x = 348,674,025,613.59/678,360.52
  6. Step 6: Final answer
    x = 513,995.16

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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.