Home / 621,723,352.55-857,990,168.78-339,476,984.22

Finding the Fourth Proportional to 621,723,352.55, 857,990,168.78 and 339,476,984.22

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Solution

The fourth proportional to 621,723,352.55, 857,990,168.78 and 339,476,984.22 is: 468,484,759.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,723,352.55 : 857,990,168.78 = 339,476,984.22 : x
  2. Step 2: Convert to fraction form
    621,723,352.55/857,990,168.78 = 339,476,984.22/x
  3. Step 3: Cross multiply
    621,723,352.55x = 857,990,168.78 × 339,476,984.22
  4. Step 4: Simplify right side
    621,723,352.55x = 291,267,914,990,836,928
  5. Step 5: Solve for x
    x = 291,267,914,990,836,928/621,723,352.55
  6. Step 6: Final answer
    x = 468,484,759.01

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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.