Home / 780,295.78-1,170,443.67-219,330.28

Finding the Fourth Proportional to 780,295.78, 1,170,443.67 and 219,330.28

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Solution

The fourth proportional to 780,295.78, 1,170,443.67 and 219,330.28 is: 328,995.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,295.78 : 1,170,443.67 = 219,330.28 : x
  2. Step 2: Convert to fraction form
    780,295.78/1,170,443.67 = 219,330.28/x
  3. Step 3: Cross multiply
    780,295.78x = 1,170,443.67 × 219,330.28
  4. Step 4: Simplify right side
    780,295.78x = 256,713,739,739.63
  5. Step 5: Solve for x
    x = 256,713,739,739.63/780,295.78
  6. Step 6: Final answer
    x = 328,995.42

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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.