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Finding the Fourth Proportional to 448,250.40, 671,684.40 and 388,807.20

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Solution

The fourth proportional to 448,250.40, 671,684.40 and 388,807.20 is: 582,611.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,250.40 : 671,684.40 = 388,807.20 : x
  2. Step 2: Convert to fraction form
    448,250.40/671,684.40 = 388,807.20/x
  3. Step 3: Cross multiply
    448,250.40x = 671,684.40 × 388,807.20
  4. Step 4: Simplify right side
    448,250.40x = 261,155,730,847.68
  5. Step 5: Solve for x
    x = 261,155,730,847.68/448,250.40
  6. Step 6: Final answer
    x = 582,611.26

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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.