Home / 1,388,620.80-2,082,931.20-442,087.20

Finding the Fourth Proportional to 1,388,620.80, 2,082,931.20 and 442,087.20

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Solution

The fourth proportional to 1,388,620.80, 2,082,931.20 and 442,087.20 is: 663,130.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,620.80 : 2,082,931.20 = 442,087.20 : x
  2. Step 2: Convert to fraction form
    1,388,620.80/2,082,931.20 = 442,087.20/x
  3. Step 3: Cross multiply
    1,388,620.80x = 2,082,931.20 × 442,087.20
  4. Step 4: Simplify right side
    1,388,620.80x = 920,837,222,000.64
  5. Step 5: Solve for x
    x = 920,837,222,000.64/1,388,620.80
  6. Step 6: Final answer
    x = 663,130.80

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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.