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Finding the Fourth Proportional to 427,682,053.20, 641,523,079.80 and 427,682,053.20

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Solution

The fourth proportional to 427,682,053.20, 641,523,079.80 and 427,682,053.20 is: 641,523,079.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,682,053.20 : 641,523,079.80 = 427,682,053.20 : x
  2. Step 2: Convert to fraction form
    427,682,053.20/641,523,079.80 = 427,682,053.20/x
  3. Step 3: Cross multiply
    427,682,053.20x = 641,523,079.80 × 427,682,053.20
  4. Step 4: Simplify right side
    427,682,053.20x = 274,367,907,944,051,424
  5. Step 5: Solve for x
    x = 274,367,907,944,051,424/427,682,053.20
  6. Step 6: Final answer
    x = 641,523,079.80

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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.