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Finding the Fourth Proportional to 1,283,368.66, 1,926,945.42 and 715,858.56

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Solution

The fourth proportional to 1,283,368.66, 1,926,945.42 and 715,858.56 is: 1,074,843.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,283,368.66 : 1,926,945.42 = 715,858.56 : x
  2. Step 2: Convert to fraction form
    1,283,368.66/1,926,945.42 = 715,858.56/x
  3. Step 3: Cross multiply
    1,283,368.66x = 1,926,945.42 × 715,858.56
  4. Step 4: Simplify right side
    1,283,368.66x = 1,379,420,370,875.33
  5. Step 5: Solve for x
    x = 1,379,420,370,875.33/1,283,368.66
  6. Step 6: Final answer
    x = 1,074,843.43

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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.