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Finding the Fourth Proportional to 3,896,447.58, 5,845,220.01 and 1,200,990.06

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Solution

The fourth proportional to 3,896,447.58, 5,845,220.01 and 1,200,990.06 is: 1,801,654.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,896,447.58 : 5,845,220.01 = 1,200,990.06 : x
  2. Step 2: Convert to fraction form
    3,896,447.58/5,845,220.01 = 1,200,990.06/x
  3. Step 3: Cross multiply
    3,896,447.58x = 5,845,220.01 × 1,200,990.06
  4. Step 4: Simplify right side
    3,896,447.58x = 7,020,051,130,523.10
  5. Step 5: Solve for x
    x = 7,020,051,130,523.10/3,896,447.58
  6. Step 6: Final answer
    x = 1,801,654.20

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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.