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Finding the Fourth Proportional to 626,409.34, 864,447.15 and 339,929.35

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Solution

The fourth proportional to 626,409.34, 864,447.15 and 339,929.35 is: 469,103.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,409.34 : 864,447.15 = 339,929.35 : x
  2. Step 2: Convert to fraction form
    626,409.34/864,447.15 = 339,929.35/x
  3. Step 3: Cross multiply
    626,409.34x = 864,447.15 × 339,929.35
  4. Step 4: Simplify right side
    626,409.34x = 293,850,957,808.85
  5. Step 5: Solve for x
    x = 293,850,957,808.85/626,409.34
  6. Step 6: Final answer
    x = 469,103.73

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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.