Home / 678,315.35-936,086.15-372,419.93

Finding the Fourth Proportional to 678,315.35, 936,086.15 and 372,419.93

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Solution

The fourth proportional to 678,315.35, 936,086.15 and 372,419.93 is: 513,945.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,315.35 : 936,086.15 = 372,419.93 : x
  2. Step 2: Convert to fraction form
    678,315.35/936,086.15 = 372,419.93/x
  3. Step 3: Cross multiply
    678,315.35x = 936,086.15 × 372,419.93
  4. Step 4: Simplify right side
    678,315.35x = 348,617,131,914.44
  5. Step 5: Solve for x
    x = 348,617,131,914.44/678,315.35
  6. Step 6: Final answer
    x = 513,945.52

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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.