Home / 678,813.36-936,835.92-434,020.02

Finding the Fourth Proportional to 678,813.36, 936,835.92 and 434,020.02

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Solution

The fourth proportional to 678,813.36, 936,835.92 and 434,020.02 is: 598,994.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,813.36 : 936,835.92 = 434,020.02 : x
  2. Step 2: Convert to fraction form
    678,813.36/936,835.92 = 434,020.02/x
  3. Step 3: Cross multiply
    678,813.36x = 936,835.92 × 434,020.02
  4. Step 4: Simplify right side
    678,813.36x = 406,605,544,735.12
  5. Step 5: Solve for x
    x = 406,605,544,735.12/678,813.36
  6. Step 6: Final answer
    x = 598,994.61

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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.