Home / 678,749.54-936,648.70-376,962.98

Finding the Fourth Proportional to 678,749.54, 936,648.70 and 376,962.98

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Solution

The fourth proportional to 678,749.54, 936,648.70 and 376,962.98 is: 520,194.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,749.54 : 936,648.70 = 376,962.98 : x
  2. Step 2: Convert to fraction form
    678,749.54/936,648.70 = 376,962.98/x
  3. Step 3: Cross multiply
    678,749.54x = 936,648.70 × 376,962.98
  4. Step 4: Simplify right side
    678,749.54x = 353,081,879,539.48
  5. Step 5: Solve for x
    x = 353,081,879,539.48/678,749.54
  6. Step 6: Final answer
    x = 520,194.65

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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.