Home / 388,306,965.96-582,462,626.37-129,521,475.77

Finding the Fourth Proportional to 388,306,965.96, 582,462,626.37 and 129,521,475.77

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Solution

The fourth proportional to 388,306,965.96, 582,462,626.37 and 129,521,475.77 is: 194,282,939.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,306,965.96 : 582,462,626.37 = 129,521,475.77 : x
  2. Step 2: Convert to fraction form
    388,306,965.96/582,462,626.37 = 129,521,475.77/x
  3. Step 3: Cross multiply
    388,306,965.96x = 582,462,626.37 × 129,521,475.77
  4. Step 4: Simplify right side
    388,306,965.96x = 75,441,418,945,643,712
  5. Step 5: Solve for x
    x = 75,441,418,945,643,712/388,306,965.96
  6. Step 6: Final answer
    x = 194,282,939.94

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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.