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Finding the Fourth Proportional to 1,276,204.02, 1,913,654.89 and 422,971.89

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Solution

The fourth proportional to 1,276,204.02, 1,913,654.89 and 422,971.89 is: 634,242.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,204.02 : 1,913,654.89 = 422,971.89 : x
  2. Step 2: Convert to fraction form
    1,276,204.02/1,913,654.89 = 422,971.89/x
  3. Step 3: Cross multiply
    1,276,204.02x = 1,913,654.89 × 422,971.89
  4. Step 4: Simplify right side
    1,276,204.02x = 809,422,223,516.18
  5. Step 5: Solve for x
    x = 809,422,223,516.18/1,276,204.02
  6. Step 6: Final answer
    x = 634,242.03

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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.