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Finding the Fourth Proportional to 978,382.60, 1,467,573.90 and 694,947.40

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Solution

The fourth proportional to 978,382.60, 1,467,573.90 and 694,947.40 is: 1,042,421.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,382.60 : 1,467,573.90 = 694,947.40 : x
  2. Step 2: Convert to fraction form
    978,382.60/1,467,573.90 = 694,947.40/x
  3. Step 3: Cross multiply
    978,382.60x = 1,467,573.90 × 694,947.40
  4. Step 4: Simplify right side
    978,382.60x = 1,019,886,666,112.86
  5. Step 5: Solve for x
    x = 1,019,886,666,112.86/978,382.60
  6. Step 6: Final answer
    x = 1,042,421.10

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.