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Finding the Fourth Proportional to 1,008,193.70, 1,512,290.55 and 984,865.70

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Solution

The fourth proportional to 1,008,193.70, 1,512,290.55 and 984,865.70 is: 1,477,298.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008,193.70 : 1,512,290.55 = 984,865.70 : x
  2. Step 2: Convert to fraction form
    1,008,193.70/1,512,290.55 = 984,865.70/x
  3. Step 3: Cross multiply
    1,008,193.70x = 1,512,290.55 × 984,865.70
  4. Step 4: Simplify right side
    1,008,193.70x = 1,489,403,091,129.14
  5. Step 5: Solve for x
    x = 1,489,403,091,129.14/1,008,193.70
  6. Step 6: Final answer
    x = 1,477,298.55

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Why These Related Problems?

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