Home / 1,987,031.20-2,978,874.96-864,254.56

Finding the Fourth Proportional to 1,987,031.20, 2,978,874.96 and 864,254.56

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Solution

The fourth proportional to 1,987,031.20, 2,978,874.96 and 864,254.56 is: 1,295,654.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987,031.20 : 2,978,874.96 = 864,254.56 : x
  2. Step 2: Convert to fraction form
    1,987,031.20/2,978,874.96 = 864,254.56/x
  3. Step 3: Cross multiply
    1,987,031.20x = 2,978,874.96 × 864,254.56
  4. Step 4: Simplify right side
    1,987,031.20x = 2,574,506,267,849.82
  5. Step 5: Solve for x
    x = 2,574,506,267,849.82/1,987,031.20
  6. Step 6: Final answer
    x = 1,295,654.68

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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.