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Finding the Fourth Proportional to 626,605.20, 864,712.26 and 340,122.78

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Solution

The fourth proportional to 626,605.20, 864,712.26 and 340,122.78 is: 469,367.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,605.20 : 864,712.26 = 340,122.78 : x
  2. Step 2: Convert to fraction form
    626,605.20/864,712.26 = 340,122.78/x
  3. Step 3: Cross multiply
    626,605.20x = 864,712.26 × 340,122.78
  4. Step 4: Simplify right side
    626,605.20x = 294,108,337,771.28
  5. Step 5: Solve for x
    x = 294,108,337,771.28/626,605.20
  6. Step 6: Final answer
    x = 469,367.85

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1.5x scale

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.