Home / 3,989,221.80-5,983,832.40-997,405.80

Finding the Fourth Proportional to 3,989,221.80, 5,983,832.40 and 997,405.80

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Solution

The fourth proportional to 3,989,221.80, 5,983,832.40 and 997,405.80 is: 1,496,108.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989,221.80 : 5,983,832.40 = 997,405.80 : x
  2. Step 2: Convert to fraction form
    3,989,221.80/5,983,832.40 = 997,405.80/x
  3. Step 3: Cross multiply
    3,989,221.80x = 5,983,832.40 × 997,405.80
  4. Step 4: Simplify right side
    3,989,221.80x = 5,968,309,141,987.92
  5. Step 5: Solve for x
    x = 5,968,309,141,987.92/3,989,221.80
  6. Step 6: Final answer
    x = 1,496,108.62

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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.