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Finding the Fourth Proportional to 626,558.31, 864,652.12 and 340,078.39

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Solution

The fourth proportional to 626,558.31, 864,652.12 and 340,078.39 is: 469,309.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,558.31 : 864,652.12 = 340,078.39 : x
  2. Step 2: Convert to fraction form
    626,558.31/864,652.12 = 340,078.39/x
  3. Step 3: Cross multiply
    626,558.31x = 864,652.12 × 340,078.39
  4. Step 4: Simplify right side
    626,558.31x = 294,049,497,867.86
  5. Step 5: Solve for x
    x = 294,049,497,867.86/626,558.31
  6. Step 6: Final answer
    x = 469,309.07

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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.