Home / 770,138.80-1,155,285.40-264,633.20

Finding the Fourth Proportional to 770,138.80, 1,155,285.40 and 264,633.20

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Solution

The fourth proportional to 770,138.80, 1,155,285.40 and 264,633.20 is: 396,976.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,138.80 : 1,155,285.40 = 264,633.20 : x
  2. Step 2: Convert to fraction form
    770,138.80/1,155,285.40 = 264,633.20/x
  3. Step 3: Cross multiply
    770,138.80x = 1,155,285.40 × 264,633.20
  4. Step 4: Simplify right side
    770,138.80x = 305,726,872,315.28
  5. Step 5: Solve for x
    x = 305,726,872,315.28/770,138.80
  6. Step 6: Final answer
    x = 396,976.33

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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.