Home / 1,159,280.80-1,738,111.20-685,722.40

Finding the Fourth Proportional to 1,159,280.80, 1,738,111.20 and 685,722.40

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Solution

The fourth proportional to 1,159,280.80, 1,738,111.20 and 685,722.40 is: 1,028,104.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,159,280.80 : 1,738,111.20 = 685,722.40 : x
  2. Step 2: Convert to fraction form
    1,159,280.80/1,738,111.20 = 685,722.40/x
  3. Step 3: Cross multiply
    1,159,280.80x = 1,738,111.20 × 685,722.40
  4. Step 4: Simplify right side
    1,159,280.80x = 1,191,861,783,530.88
  5. Step 5: Solve for x
    x = 1,191,861,783,530.88/1,159,280.80
  6. Step 6: Final answer
    x = 1,028,104.48

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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.