Home / 770,003.20-1,155,004.80-209,107.20

Finding the Fourth Proportional to 770,003.20, 1,155,004.80 and 209,107.20

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Solution

The fourth proportional to 770,003.20, 1,155,004.80 and 209,107.20 is: 313,660.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,003.20 : 1,155,004.80 = 209,107.20 : x
  2. Step 2: Convert to fraction form
    770,003.20/1,155,004.80 = 209,107.20/x
  3. Step 3: Cross multiply
    770,003.20x = 1,155,004.80 × 209,107.20
  4. Step 4: Simplify right side
    770,003.20x = 241,519,819,714.56
  5. Step 5: Solve for x
    x = 241,519,819,714.56/770,003.20
  6. Step 6: Final answer
    x = 313,660.80

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Half scale
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Double scale
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Similar ratio
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1.5x scale

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.