Home / 1,290,930.80-1,936,396.20-934,271.60

Finding the Fourth Proportional to 1,290,930.80, 1,936,396.20 and 934,271.60

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Solution

The fourth proportional to 1,290,930.80, 1,936,396.20 and 934,271.60 is: 1,401,407.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,930.80 : 1,936,396.20 = 934,271.60 : x
  2. Step 2: Convert to fraction form
    1,290,930.80/1,936,396.20 = 934,271.60/x
  3. Step 3: Cross multiply
    1,290,930.80x = 1,936,396.20 × 934,271.60
  4. Step 4: Simplify right side
    1,290,930.80x = 1,809,119,976,007.92
  5. Step 5: Solve for x
    x = 1,809,119,976,007.92/1,290,930.80
  6. Step 6: Final answer
    x = 1,401,407.40

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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.