Home / 678,743.10-936,639.81-376,956.54

Finding the Fourth Proportional to 678,743.10, 936,639.81 and 376,956.54

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Solution

The fourth proportional to 678,743.10, 936,639.81 and 376,956.54 is: 520,185.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,743.10 : 936,639.81 = 376,956.54 : x
  2. Step 2: Convert to fraction form
    678,743.10/936,639.81 = 376,956.54/x
  3. Step 3: Cross multiply
    678,743.10x = 936,639.81 × 376,956.54
  4. Step 4: Simplify right side
    678,743.10x = 353,072,502,003.86
  5. Step 5: Solve for x
    x = 353,072,502,003.86/678,743.10
  6. Step 6: Final answer
    x = 520,185.77

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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.