Home / 678,634.36-936,557.58-376,830.52

Finding the Fourth Proportional to 678,634.36, 936,557.58 and 376,830.52

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Solution

The fourth proportional to 678,634.36, 936,557.58 and 376,830.52 is: 520,049.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,634.36 : 936,557.58 = 376,830.52 : x
  2. Step 2: Convert to fraction form
    678,634.36/936,557.58 = 376,830.52/x
  3. Step 3: Cross multiply
    678,634.36x = 936,557.58 × 376,830.52
  4. Step 4: Simplify right side
    678,634.36x = 352,923,479,881.34
  5. Step 5: Solve for x
    x = 352,923,479,881.34/678,634.36
  6. Step 6: Final answer
    x = 520,049.53

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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.