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Finding the Fourth Proportional to 678,687.64, 936,600.23 and 372,792.33

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Solution

The fourth proportional to 678,687.64, 936,600.23 and 372,792.33 is: 514,459.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,687.64 : 936,600.23 = 372,792.33 : x
  2. Step 2: Convert to fraction form
    678,687.64/936,600.23 = 372,792.33/x
  3. Step 3: Cross multiply
    678,687.64x = 936,600.23 × 372,792.33
  4. Step 4: Simplify right side
    678,687.64x = 349,157,382,952.22
  5. Step 5: Solve for x
    x = 349,157,382,952.22/678,687.64
  6. Step 6: Final answer
    x = 514,459.61

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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.