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Finding the Fourth Proportional to 647,496,469.90, 971,244,704.85 and 579,472,021.90

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Solution

The fourth proportional to 647,496,469.90, 971,244,704.85 and 579,472,021.90 is: 869,208,032.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,496,469.90 : 971,244,704.85 = 579,472,021.90 : x
  2. Step 2: Convert to fraction form
    647,496,469.90/971,244,704.85 = 579,472,021.90/x
  3. Step 3: Cross multiply
    647,496,469.90x = 971,244,704.85 × 579,472,021.90
  4. Step 4: Simplify right side
    647,496,469.90x = 562,809,132,879,098,240
  5. Step 5: Solve for x
    x = 562,809,132,879,098,240/647,496,469.90
  6. Step 6: Final answer
    x = 869,208,032.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.