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Finding the Fourth Proportional to 678,907.38, 936,908.67 and 373,003.56

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Solution

The fourth proportional to 678,907.38, 936,908.67 and 373,003.56 is: 514,753.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,907.38 : 936,908.67 = 373,003.56 : x
  2. Step 2: Convert to fraction form
    678,907.38/936,908.67 = 373,003.56/x
  3. Step 3: Cross multiply
    678,907.38x = 936,908.67 × 373,003.56
  4. Step 4: Simplify right side
    678,907.38x = 349,470,269,304.87
  5. Step 5: Solve for x
    x = 349,470,269,304.87/678,907.38
  6. Step 6: Final answer
    x = 514,753.97

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1.5x scale

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.