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Finding the Fourth Proportional to 678,905.88, 936,906.60 and 373,002.06

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Solution

The fourth proportional to 678,905.88, 936,906.60 and 373,002.06 is: 514,751.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,905.88 : 936,906.60 = 373,002.06 : x
  2. Step 2: Convert to fraction form
    678,905.88/936,906.60 = 373,002.06/x
  3. Step 3: Cross multiply
    678,905.88x = 936,906.60 × 373,002.06
  4. Step 4: Simplify right side
    678,905.88x = 349,468,091,827.60
  5. Step 5: Solve for x
    x = 349,468,091,827.60/678,905.88
  6. Step 6: Final answer
    x = 514,751.90

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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.