Home / 1,269,289.80-1,903,880.70-427,840.20

Finding the Fourth Proportional to 1,269,289.80, 1,903,880.70 and 427,840.20

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Solution

The fourth proportional to 1,269,289.80, 1,903,880.70 and 427,840.20 is: 641,742.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,269,289.80 : 1,903,880.70 = 427,840.20 : x
  2. Step 2: Convert to fraction form
    1,269,289.80/1,903,880.70 = 427,840.20/x
  3. Step 3: Cross multiply
    1,269,289.80x = 1,903,880.70 × 427,840.20
  4. Step 4: Simplify right side
    1,269,289.80x = 814,556,699,464.14
  5. Step 5: Solve for x
    x = 814,556,699,464.14/1,269,289.80
  6. Step 6: Final answer
    x = 641,742.10

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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.