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Finding the Fourth Proportional to 388,468,265.85, 582,702,398.78 and 388,468,265.85

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Solution

The fourth proportional to 388,468,265.85, 582,702,398.78 and 388,468,265.85 is: 582,702,398.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,468,265.85 : 582,702,398.78 = 388,468,265.85 : x
  2. Step 2: Convert to fraction form
    388,468,265.85/582,702,398.78 = 388,468,265.85/x
  3. Step 3: Cross multiply
    388,468,265.85x = 582,702,398.78 × 388,468,265.85
  4. Step 4: Simplify right side
    388,468,265.85x = 226,361,390,358,759,424
  5. Step 5: Solve for x
    x = 226,361,390,358,759,424/388,468,265.85
  6. Step 6: Final answer
    x = 582,702,398.78

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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.