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Finding the Fourth Proportional to 678,906.38, 936,907.29 and 373,002.56

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Solution

The fourth proportional to 678,906.38, 936,907.29 and 373,002.56 is: 514,752.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,906.38 : 936,907.29 = 373,002.56 : x
  2. Step 2: Convert to fraction form
    678,906.38/936,907.29 = 373,002.56/x
  3. Step 3: Cross multiply
    678,906.38x = 936,907.29 × 373,002.56
  4. Step 4: Simplify right side
    678,906.38x = 349,468,812,968.13
  5. Step 5: Solve for x
    x = 349,468,812,968.13/678,906.38
  6. Step 6: Final answer
    x = 514,752.59

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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.