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Finding the Fourth Proportional to 1,333,764.47, 1,840,594.75 and 721,917.06

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Solution

The fourth proportional to 1,333,764.47, 1,840,594.75 and 721,917.06 is: 996,245.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,333,764.47 : 1,840,594.75 = 721,917.06 : x
  2. Step 2: Convert to fraction form
    1,333,764.47/1,840,594.75 = 721,917.06/x
  3. Step 3: Cross multiply
    1,333,764.47x = 1,840,594.75 × 721,917.06
  4. Step 4: Simplify right side
    1,333,764.47x = 1,328,756,750,571.44
  5. Step 5: Solve for x
    x = 1,328,756,750,571.44/1,333,764.47
  6. Step 6: Final answer
    x = 996,245.42

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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.