Home / 388,306,989.26-582,462,661.32-129,521,499.08

Finding the Fourth Proportional to 388,306,989.26, 582,462,661.32 and 129,521,499.08

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Solution

The fourth proportional to 388,306,989.26, 582,462,661.32 and 129,521,499.08 is: 194,282,974.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,306,989.26 : 582,462,661.32 = 129,521,499.08 : x
  2. Step 2: Convert to fraction form
    388,306,989.26/582,462,661.32 = 129,521,499.08/x
  3. Step 3: Cross multiply
    388,306,989.26x = 582,462,661.32 × 129,521,499.08
  4. Step 4: Simplify right side
    388,306,989.26x = 75,441,437,052,292,736
  5. Step 5: Solve for x
    x = 75,441,437,052,292,736/388,306,989.26
  6. Step 6: Final answer
    x = 194,282,974.91

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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.