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Finding the Fourth Proportional to 647,070.99, 892,920.82 and 371,370.48

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Solution

The fourth proportional to 647,070.99, 892,920.82 and 371,370.48 is: 512,469.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,070.99 : 892,920.82 = 371,370.48 : x
  2. Step 2: Convert to fraction form
    647,070.99/892,920.82 = 371,370.48/x
  3. Step 3: Cross multiply
    647,070.99x = 892,920.82 × 371,370.48
  4. Step 4: Simplify right side
    647,070.99x = 331,604,433,525.39
  5. Step 5: Solve for x
    x = 331,604,433,525.39/647,070.99
  6. Step 6: Final answer
    x = 512,469.94

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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.