Home / 739,907.20-1,109,860.80-320,003.20

Finding the Fourth Proportional to 739,907.20, 1,109,860.80 and 320,003.20

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Solution

The fourth proportional to 739,907.20, 1,109,860.80 and 320,003.20 is: 480,004.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,907.20 : 1,109,860.80 = 320,003.20 : x
  2. Step 2: Convert to fraction form
    739,907.20/1,109,860.80 = 320,003.20/x
  3. Step 3: Cross multiply
    739,907.20x = 1,109,860.80 × 320,003.20
  4. Step 4: Simplify right side
    739,907.20x = 355,159,007,554.56
  5. Step 5: Solve for x
    x = 355,159,007,554.56/739,907.20
  6. Step 6: Final answer
    x = 480,004.80

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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.