Home / 388,306,967.75-582,462,629.04-129,521,477.55

Finding the Fourth Proportional to 388,306,967.75, 582,462,629.04 and 129,521,477.55

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Solution

The fourth proportional to 388,306,967.75, 582,462,629.04 and 129,521,477.55 is: 194,282,942.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,306,967.75 : 582,462,629.04 = 129,521,477.55 : x
  2. Step 2: Convert to fraction form
    388,306,967.75/582,462,629.04 = 129,521,477.55/x
  3. Step 3: Cross multiply
    388,306,967.75x = 582,462,629.04 × 129,521,477.55
  4. Step 4: Simplify right side
    388,306,967.75x = 75,441,420,330,918,336
  5. Step 5: Solve for x
    x = 75,441,420,330,918,336/388,306,967.75
  6. Step 6: Final answer
    x = 194,282,942.61

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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.