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Finding the Fourth Proportional to 1,293,351.31, 1,784,739.41 and 776,798.26

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Solution

The fourth proportional to 1,293,351.31, 1,784,739.41 and 776,798.26 is: 1,071,930.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293,351.31 : 1,784,739.41 = 776,798.26 : x
  2. Step 2: Convert to fraction form
    1,293,351.31/1,784,739.41 = 776,798.26/x
  3. Step 3: Cross multiply
    1,293,351.31x = 1,784,739.41 × 776,798.26
  4. Step 4: Simplify right side
    1,293,351.31x = 1,386,382,468,241.43
  5. Step 5: Solve for x
    x = 1,386,382,468,241.43/1,293,351.31
  6. Step 6: Final answer
    x = 1,071,930.31

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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.