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Finding the Fourth Proportional to 3,982,000.20, 5,973,021.90 and 990,184.20

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Solution

The fourth proportional to 3,982,000.20, 5,973,021.90 and 990,184.20 is: 1,485,281.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,982,000.20 : 5,973,021.90 = 990,184.20 : x
  2. Step 2: Convert to fraction form
    3,982,000.20/5,973,021.90 = 990,184.20/x
  3. Step 3: Cross multiply
    3,982,000.20x = 5,973,021.90 × 990,184.20
  4. Step 4: Simplify right side
    3,982,000.20x = 5,914,391,911,633.98
  5. Step 5: Solve for x
    x = 5,914,391,911,633.98/3,982,000.20
  6. Step 6: Final answer
    x = 1,485,281.67

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1.5x scale

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.