Home / 388,008,401.68-581,797,270.45-129,082,276.45

Finding the Fourth Proportional to 388,008,401.68, 581,797,270.45 and 129,082,276.45

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Solution

The fourth proportional to 388,008,401.68, 581,797,270.45 and 129,082,276.45 is: 193,551,778.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,008,401.68 : 581,797,270.45 = 129,082,276.45 : x
  2. Step 2: Convert to fraction form
    388,008,401.68/581,797,270.45 = 129,082,276.45/x
  3. Step 3: Cross multiply
    388,008,401.68x = 581,797,270.45 × 129,082,276.45
  4. Step 4: Simplify right side
    388,008,401.68x = 75,099,716,102,969,616
  5. Step 5: Solve for x
    x = 75,099,716,102,969,616/388,008,401.68
  6. Step 6: Final answer
    x = 193,551,778.20

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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.