Home / 621,015,277.20-930,731,659.20-330,021,805.20

Finding the Fourth Proportional to 621,015,277.20, 930,731,659.20 and 330,021,805.20

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Solution

The fourth proportional to 621,015,277.20, 930,731,659.20 and 330,021,805.20 is: 494,612,215.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,015,277.20 : 930,731,659.20 = 330,021,805.20 : x
  2. Step 2: Convert to fraction form
    621,015,277.20/930,731,659.20 = 330,021,805.20/x
  3. Step 3: Cross multiply
    621,015,277.20x = 930,731,659.20 × 330,021,805.20
  4. Step 4: Simplify right side
    621,015,277.20x = 307,161,742,325,975,168
  5. Step 5: Solve for x
    x = 307,161,742,325,975,168/621,015,277.20
  6. Step 6: Final answer
    x = 494,612,215.84

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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.