Home / 629,816,906.85-869,147,705.39-351,358,430.40

Finding the Fourth Proportional to 629,816,906.85, 869,147,705.39 and 351,358,430.40

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Solution

The fourth proportional to 629,816,906.85, 869,147,705.39 and 351,358,430.40 is: 484,874,842.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,816,906.85 : 869,147,705.39 = 351,358,430.40 : x
  2. Step 2: Convert to fraction form
    629,816,906.85/869,147,705.39 = 351,358,430.40/x
  3. Step 3: Cross multiply
    629,816,906.85x = 869,147,705.39 × 351,358,430.40
  4. Step 4: Simplify right side
    629,816,906.85x = 305,382,373,549,835,200
  5. Step 5: Solve for x
    x = 305,382,373,549,835,200/629,816,906.85
  6. Step 6: Final answer
    x = 484,874,842.56

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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.