Home / 1,684,380.42-2,324,406.78-920,438.64

Finding the Fourth Proportional to 1,684,380.42, 2,324,406.78 and 920,438.64

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Solution

The fourth proportional to 1,684,380.42, 2,324,406.78 and 920,438.64 is: 1,270,184.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,684,380.42 : 2,324,406.78 = 920,438.64 : x
  2. Step 2: Convert to fraction form
    1,684,380.42/2,324,406.78 = 920,438.64/x
  3. Step 3: Cross multiply
    1,684,380.42x = 2,324,406.78 × 920,438.64
  4. Step 4: Simplify right side
    1,684,380.42x = 2,139,473,815,389.98
  5. Step 5: Solve for x
    x = 2,139,473,815,389.98/1,684,380.42
  6. Step 6: Final answer
    x = 1,270,184.45

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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.