Home / 626,422.31-864,462.75-339,942.39

Finding the Fourth Proportional to 626,422.31, 864,462.75 and 339,942.39

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Solution

The fourth proportional to 626,422.31, 864,462.75 and 339,942.39 is: 469,120.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,422.31 : 864,462.75 = 339,942.39 : x
  2. Step 2: Convert to fraction form
    626,422.31/864,462.75 = 339,942.39/x
  3. Step 3: Cross multiply
    626,422.31x = 864,462.75 × 339,942.39
  4. Step 4: Simplify right side
    626,422.31x = 293,867,538,946.62
  5. Step 5: Solve for x
    x = 293,867,538,946.62/626,422.31
  6. Step 6: Final answer
    x = 469,120.49

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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.