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Finding the Fourth Proportional to 389,902.33, 583,522.84 and 326,793.70

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Solution

The fourth proportional to 389,902.33, 583,522.84 and 326,793.70 is: 489,075.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,902.33 : 583,522.84 = 326,793.70 : x
  2. Step 2: Convert to fraction form
    389,902.33/583,522.84 = 326,793.70/x
  3. Step 3: Cross multiply
    389,902.33x = 583,522.84 × 326,793.70
  4. Step 4: Simplify right side
    389,902.33x = 190,691,587,918.11
  5. Step 5: Solve for x
    x = 190,691,587,918.11/389,902.33
  6. Step 6: Final answer
    x = 489,075.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.