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Finding the Fourth Proportional to 1,996,566.40, 2,992,808.40 and 984,131.20

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Solution

The fourth proportional to 1,996,566.40, 2,992,808.40 and 984,131.20 is: 1,475,190.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,996,566.40 : 2,992,808.40 = 984,131.20 : x
  2. Step 2: Convert to fraction form
    1,996,566.40/2,992,808.40 = 984,131.20/x
  3. Step 3: Cross multiply
    1,996,566.40x = 2,992,808.40 × 984,131.20
  4. Step 4: Simplify right side
    1,996,566.40x = 2,945,316,122,062.08
  5. Step 5: Solve for x
    x = 2,945,316,122,062.08/1,996,566.40
  6. Step 6: Final answer
    x = 1,475,190.67

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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.