Home / 621,703,658.39-858,026,289.27-353,844,620.43

Finding the Fourth Proportional to 621,703,658.39, 858,026,289.27 and 353,844,620.43

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Solution

The fourth proportional to 621,703,658.39, 858,026,289.27 and 353,844,620.43 is: 488,348,399.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,703,658.39 : 858,026,289.27 = 353,844,620.43 : x
  2. Step 2: Convert to fraction form
    621,703,658.39/858,026,289.27 = 353,844,620.43/x
  3. Step 3: Cross multiply
    621,703,658.39x = 858,026,289.27 × 353,844,620.43
  4. Step 4: Simplify right side
    621,703,658.39x = 303,607,986,645,704,512
  5. Step 5: Solve for x
    x = 303,607,986,645,704,512/621,703,658.39
  6. Step 6: Final answer
    x = 488,348,399.67

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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.