Home / 1,388,625.20-2,082,937.80-490,059.80

Finding the Fourth Proportional to 1,388,625.20, 2,082,937.80 and 490,059.80

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Solution

The fourth proportional to 1,388,625.20, 2,082,937.80 and 490,059.80 is: 735,089.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,625.20 : 2,082,937.80 = 490,059.80 : x
  2. Step 2: Convert to fraction form
    1,388,625.20/2,082,937.80 = 490,059.80/x
  3. Step 3: Cross multiply
    1,388,625.20x = 2,082,937.80 × 490,059.80
  4. Step 4: Simplify right side
    1,388,625.20x = 1,020,764,081,680.44
  5. Step 5: Solve for x
    x = 1,020,764,081,680.44/1,388,625.20
  6. Step 6: Final answer
    x = 735,089.70

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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.