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Finding the Fourth Proportional to 3,989,215.77, 5,983,823.39 and 997,399.77

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Solution

The fourth proportional to 3,989,215.77, 5,983,823.39 and 997,399.77 is: 1,496,099.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989,215.77 : 5,983,823.39 = 997,399.77 : x
  2. Step 2: Convert to fraction form
    3,989,215.77/5,983,823.39 = 997,399.77/x
  3. Step 3: Cross multiply
    3,989,215.77x = 5,983,823.39 × 997,399.77
  4. Step 4: Simplify right side
    3,989,215.77x = 5,968,264,067,919.62
  5. Step 5: Solve for x
    x = 5,968,264,067,919.62/3,989,215.77
  6. Step 6: Final answer
    x = 1,496,099.59

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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.