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Finding the Fourth Proportional to 990,871.44, 1,367,409.60 and 538,162.44

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Solution

The fourth proportional to 990,871.44, 1,367,409.60 and 538,162.44 is: 742,667.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,871.44 : 1,367,409.60 = 538,162.44 : x
  2. Step 2: Convert to fraction form
    990,871.44/1,367,409.60 = 538,162.44/x
  3. Step 3: Cross multiply
    990,871.44x = 1,367,409.60 × 538,162.44
  4. Step 4: Simplify right side
    990,871.44x = 735,888,486,815.42
  5. Step 5: Solve for x
    x = 735,888,486,815.42/990,871.44
  6. Step 6: Final answer
    x = 742,667.98

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.