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Finding the Fourth Proportional to 716,750.56, 988,704.39 and 448,012

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Solution

The fourth proportional to 716,750.56, 988,704.39 and 448,012 is: 617,999.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,750.56 : 988,704.39 = 448,012 : x
  2. Step 2: Convert to fraction form
    716,750.56/988,704.39 = 448,012/x
  3. Step 3: Cross multiply
    716,750.56x = 988,704.39 × 448,012
  4. Step 4: Simplify right side
    716,750.56x = 442,951,431,172.68
  5. Step 5: Solve for x
    x = 442,951,431,172.68/716,750.56
  6. Step 6: Final answer
    x = 617,999.42

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Why These Related Problems?

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