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Finding the Fourth Proportional to 408,463.83, 612,614.75 and 388,210.23

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Solution

The fourth proportional to 408,463.83, 612,614.75 and 388,210.23 is: 582,238.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,463.83 : 612,614.75 = 388,210.23 : x
  2. Step 2: Convert to fraction form
    408,463.83/612,614.75 = 388,210.23/x
  3. Step 3: Cross multiply
    408,463.83x = 612,614.75 × 388,210.23
  4. Step 4: Simplify right side
    408,463.83x = 237,823,311,057.84
  5. Step 5: Solve for x
    x = 237,823,311,057.84/408,463.83
  6. Step 6: Final answer
    x = 582,238.36

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1.5x scale

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.