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Finding the Fourth Proportional to 2,991,896.89, 4,487,845.32 and 748,034.89

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Solution

The fourth proportional to 2,991,896.89, 4,487,845.32 and 748,034.89 is: 1,122,052.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,991,896.89 : 4,487,845.32 = 748,034.89 : x
  2. Step 2: Convert to fraction form
    2,991,896.89/4,487,845.32 = 748,034.89/x
  3. Step 3: Cross multiply
    2,991,896.89x = 4,487,845.32 × 748,034.89
  4. Step 4: Simplify right side
    2,991,896.89x = 3,357,064,880,283.22
  5. Step 5: Solve for x
    x = 3,357,064,880,283.22/2,991,896.89
  6. Step 6: Final answer
    x = 1,122,052.33

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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.