Home / 678,618.36-936,535.54-376,814.52

Finding the Fourth Proportional to 678,618.36, 936,535.54 and 376,814.52

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Solution

The fourth proportional to 678,618.36, 936,535.54 and 376,814.52 is: 520,027.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,618.36 : 936,535.54 = 376,814.52 : x
  2. Step 2: Convert to fraction form
    678,618.36/936,535.54 = 376,814.52/x
  3. Step 3: Cross multiply
    678,618.36x = 936,535.54 × 376,814.52
  4. Step 4: Simplify right side
    678,618.36x = 352,900,189,968.04
  5. Step 5: Solve for x
    x = 352,900,189,968.04/678,618.36
  6. Step 6: Final answer
    x = 520,027.47

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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.