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Finding the Fourth Proportional to 3,989,188.06, 5,983,782.23 and 997,372.06

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Solution

The fourth proportional to 3,989,188.06, 5,983,782.23 and 997,372.06 is: 1,496,058.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989,188.06 : 5,983,782.23 = 997,372.06 : x
  2. Step 2: Convert to fraction form
    3,989,188.06/5,983,782.23 = 997,372.06/x
  3. Step 3: Cross multiply
    3,989,188.06x = 5,983,782.23 × 997,372.06
  4. Step 4: Simplify right side
    3,989,188.06x = 5,968,057,209,326.49
  5. Step 5: Solve for x
    x = 5,968,057,209,326.49/3,989,188.06
  6. Step 6: Final answer
    x = 1,496,058.13

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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.