Home / 388,307,040.72-582,462,738.64-129,521,550.52

Finding the Fourth Proportional to 388,307,040.72, 582,462,738.64 and 129,521,550.52

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Solution

The fourth proportional to 388,307,040.72, 582,462,738.64 and 129,521,550.52 is: 194,283,052.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,307,040.72 : 582,462,738.64 = 129,521,550.52 : x
  2. Step 2: Convert to fraction form
    388,307,040.72/582,462,738.64 = 129,521,550.52/x
  3. Step 3: Cross multiply
    388,307,040.72x = 582,462,738.64 × 129,521,550.52
  4. Step 4: Simplify right side
    388,307,040.72x = 75,441,477,028,778,304
  5. Step 5: Solve for x
    x = 75,441,477,028,778,304/388,307,040.72
  6. Step 6: Final answer
    x = 194,283,052.11

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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.