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Finding the Fourth Proportional to 1,581,936.54, 2,183,109.78 and 902,936.22

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Solution

The fourth proportional to 1,581,936.54, 2,183,109.78 and 902,936.22 is: 1,246,073.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,581,936.54 : 2,183,109.78 = 902,936.22 : x
  2. Step 2: Convert to fraction form
    1,581,936.54/2,183,109.78 = 902,936.22/x
  3. Step 3: Cross multiply
    1,581,936.54x = 2,183,109.78 × 902,936.22
  4. Step 4: Simplify right side
    1,581,936.54x = 1,971,208,892,598.23
  5. Step 5: Solve for x
    x = 1,971,208,892,598.23/1,581,936.54
  6. Step 6: Final answer
    x = 1,246,073.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.