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Finding the Fourth Proportional to 626,378.27, 864,404.31 and 339,898.35

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Solution

The fourth proportional to 626,378.27, 864,404.31 and 339,898.35 is: 469,060.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,378.27 : 864,404.31 = 339,898.35 : x
  2. Step 2: Convert to fraction form
    626,378.27/864,404.31 = 339,898.35/x
  3. Step 3: Cross multiply
    626,378.27x = 864,404.31 × 339,898.35
  4. Step 4: Simplify right side
    626,378.27x = 293,809,598,701.89
  5. Step 5: Solve for x
    x = 293,809,598,701.89/626,378.27
  6. Step 6: Final answer
    x = 469,060.97

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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.