Home / 388,368,015.20-582,552,022.80-355,111,618.40

Finding the Fourth Proportional to 388,368,015.20, 582,552,022.80 and 355,111,618.40

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Solution

The fourth proportional to 388,368,015.20, 582,552,022.80 and 355,111,618.40 is: 532,667,427.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,368,015.20 : 582,552,022.80 = 355,111,618.40 : x
  2. Step 2: Convert to fraction form
    388,368,015.20/582,552,022.80 = 355,111,618.40/x
  3. Step 3: Cross multiply
    388,368,015.20x = 582,552,022.80 × 355,111,618.40
  4. Step 4: Simplify right side
    388,368,015.20x = 206,870,991,618,701,664
  5. Step 5: Solve for x
    x = 206,870,991,618,701,664/388,368,015.20
  6. Step 6: Final answer
    x = 532,667,427.60

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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.