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Finding the Fourth Proportional to 660,438.75, 911,409.06 and 374,014.65

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Solution

The fourth proportional to 660,438.75, 911,409.06 and 374,014.65 is: 516,142.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,438.75 : 911,409.06 = 374,014.65 : x
  2. Step 2: Convert to fraction form
    660,438.75/911,409.06 = 374,014.65/x
  3. Step 3: Cross multiply
    660,438.75x = 911,409.06 × 374,014.65
  4. Step 4: Simplify right side
    660,438.75x = 340,880,340,582.73
  5. Step 5: Solve for x
    x = 340,880,340,582.73/660,438.75
  6. Step 6: Final answer
    x = 516,142.25

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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.