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Finding the Fourth Proportional to 1,986,021.90, 2,973,127.95 and 1,986,021.90

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Solution

The fourth proportional to 1,986,021.90, 2,973,127.95 and 1,986,021.90 is: 2,973,127.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986,021.90 : 2,973,127.95 = 1,986,021.90 : x
  2. Step 2: Convert to fraction form
    1,986,021.90/2,973,127.95 = 1,986,021.90/x
  3. Step 3: Cross multiply
    1,986,021.90x = 2,973,127.95 × 1,986,021.90
  4. Step 4: Simplify right side
    1,986,021.90x = 5,904,697,220,202.11
  5. Step 5: Solve for x
    x = 5,904,697,220,202.11/1,986,021.90
  6. Step 6: Final answer
    x = 2,973,127.95

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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.