Home / 678,738.66-936,633.69-376,952.10

Finding the Fourth Proportional to 678,738.66, 936,633.69 and 376,952.10

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Solution

The fourth proportional to 678,738.66, 936,633.69 and 376,952.10 is: 520,179.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,738.66 : 936,633.69 = 376,952.10 : x
  2. Step 2: Convert to fraction form
    678,738.66/936,633.69 = 376,952.10/x
  3. Step 3: Cross multiply
    678,738.66x = 936,633.69 × 376,952.10
  4. Step 4: Simplify right side
    678,738.66x = 353,066,036,376.25
  5. Step 5: Solve for x
    x = 353,066,036,376.25/678,738.66
  6. Step 6: Final answer
    x = 520,179.65

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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.