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Finding the Fourth Proportional to 716,745.81, 988,697.82 and 448,007.25

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Solution

The fourth proportional to 716,745.81, 988,697.82 and 448,007.25 is: 617,992.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,745.81 : 988,697.82 = 448,007.25 : x
  2. Step 2: Convert to fraction form
    716,745.81/988,697.82 = 448,007.25/x
  3. Step 3: Cross multiply
    716,745.81x = 988,697.82 × 448,007.25
  4. Step 4: Simplify right side
    716,745.81x = 442,943,791,419.20
  5. Step 5: Solve for x
    x = 442,943,791,419.20/716,745.81
  6. Step 6: Final answer
    x = 617,992.86

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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.