Home / 728,018.80-1,091,736.60-254,460.40

Finding the Fourth Proportional to 728,018.80, 1,091,736.60 and 254,460.40

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Solution

The fourth proportional to 728,018.80, 1,091,736.60 and 254,460.40 is: 381,588.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,018.80 : 1,091,736.60 = 254,460.40 : x
  2. Step 2: Convert to fraction form
    728,018.80/1,091,736.60 = 254,460.40/x
  3. Step 3: Cross multiply
    728,018.80x = 1,091,736.60 × 254,460.40
  4. Step 4: Simplify right side
    728,018.80x = 277,803,731,930.64
  5. Step 5: Solve for x
    x = 277,803,731,930.64/728,018.80
  6. Step 6: Final answer
    x = 381,588.68

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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.