Home / 621,015,278.20-930,731,660.70-330,021,806.20

Finding the Fourth Proportional to 621,015,278.20, 930,731,660.70 and 330,021,806.20

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Solution

The fourth proportional to 621,015,278.20, 930,731,660.70 and 330,021,806.20 is: 494,612,217.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,015,278.20 : 930,731,660.70 = 330,021,806.20 : x
  2. Step 2: Convert to fraction form
    621,015,278.20/930,731,660.70 = 330,021,806.20/x
  3. Step 3: Cross multiply
    621,015,278.20x = 930,731,660.70 × 330,021,806.20
  4. Step 4: Simplify right side
    621,015,278.20x = 307,161,743,751,739,584
  5. Step 5: Solve for x
    x = 307,161,743,751,739,584/621,015,278.20
  6. Step 6: Final answer
    x = 494,612,217.34

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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.