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Finding the Fourth Proportional to 626,016,478.20, 863,869,013.83 and 347,540,065.59

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Solution

The fourth proportional to 626,016,478.20, 863,869,013.83 and 347,540,065.59 is: 479,586,567.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,016,478.20 : 863,869,013.83 = 347,540,065.59 : x
  2. Step 2: Convert to fraction form
    626,016,478.20/863,869,013.83 = 347,540,065.59/x
  3. Step 3: Cross multiply
    626,016,478.20x = 863,869,013.83 × 347,540,065.59
  4. Step 4: Simplify right side
    626,016,478.20x = 300,229,093,730,340,736
  5. Step 5: Solve for x
    x = 300,229,093,730,340,736/626,016,478.20
  6. Step 6: Final answer
    x = 479,586,567.11

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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.