Home / 1,421,820.45-1,962,125.28-809,964.14

Finding the Fourth Proportional to 1,421,820.45, 1,962,125.28 and 809,964.14

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Solution

The fourth proportional to 1,421,820.45, 1,962,125.28 and 809,964.14 is: 1,117,757.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,820.45 : 1,962,125.28 = 809,964.14 : x
  2. Step 2: Convert to fraction form
    1,421,820.45/1,962,125.28 = 809,964.14/x
  3. Step 3: Cross multiply
    1,421,820.45x = 1,962,125.28 × 809,964.14
  4. Step 4: Simplify right side
    1,421,820.45x = 1,589,251,119,892.77
  5. Step 5: Solve for x
    x = 1,589,251,119,892.77/1,421,820.45
  6. Step 6: Final answer
    x = 1,117,757.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.