Home / 687,039.17-948,119.23-376,939.64

Finding the Fourth Proportional to 687,039.17, 948,119.23 and 376,939.64

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Solution

The fourth proportional to 687,039.17, 948,119.23 and 376,939.64 is: 520,179.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,039.17 : 948,119.23 = 376,939.64 : x
  2. Step 2: Convert to fraction form
    687,039.17/948,119.23 = 376,939.64/x
  3. Step 3: Cross multiply
    687,039.17x = 948,119.23 × 376,939.64
  4. Step 4: Simplify right side
    687,039.17x = 357,383,724,074.75
  5. Step 5: Solve for x
    x = 357,383,724,074.75/687,039.17
  6. Step 6: Final answer
    x = 520,179.55

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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.