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Finding the Fourth Proportional to 448,425.32, 618,446.23 and 378,915.16

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Solution

The fourth proportional to 448,425.32, 618,446.23 and 378,915.16 is: 522,581.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,425.32 : 618,446.23 = 378,915.16 : x
  2. Step 2: Convert to fraction form
    448,425.32/618,446.23 = 378,915.16/x
  3. Step 3: Cross multiply
    448,425.32x = 618,446.23 × 378,915.16
  4. Step 4: Simplify right side
    448,425.32x = 234,338,649,698.44
  5. Step 5: Solve for x
    x = 234,338,649,698.44/448,425.32
  6. Step 6: Final answer
    x = 522,581.21

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.