Home / 1,159,138.80-1,739,485.80-685,321.20

Finding the Fourth Proportional to 1,159,138.80, 1,739,485.80 and 685,321.20

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Solution

The fourth proportional to 1,159,138.80, 1,739,485.80 and 685,321.20 is: 1,028,441.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,159,138.80 : 1,739,485.80 = 685,321.20 : x
  2. Step 2: Convert to fraction form
    1,159,138.80/1,739,485.80 = 685,321.20/x
  3. Step 3: Cross multiply
    1,159,138.80x = 1,739,485.80 × 685,321.20
  4. Step 4: Simplify right side
    1,159,138.80x = 1,192,106,495,838.96
  5. Step 5: Solve for x
    x = 1,192,106,495,838.96/1,159,138.80
  6. Step 6: Final answer
    x = 1,028,441.54

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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.