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Finding the Fourth Proportional to 1,241,531.56, 1,861,548.90 and 809,569.90

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Solution

The fourth proportional to 1,241,531.56, 1,861,548.90 and 809,569.90 is: 1,213,866.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,241,531.56 : 1,861,548.90 = 809,569.90 : x
  2. Step 2: Convert to fraction form
    1,241,531.56/1,861,548.90 = 809,569.90/x
  3. Step 3: Cross multiply
    1,241,531.56x = 1,861,548.90 × 809,569.90
  4. Step 4: Simplify right side
    1,241,531.56x = 1,507,053,956,818.11
  5. Step 5: Solve for x
    x = 1,507,053,956,818.11/1,241,531.56
  6. Step 6: Final answer
    x = 1,213,866.81

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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.