Home / 691,128.36-1,036,622.44-185,623.64

Finding the Fourth Proportional to 691,128.36, 1,036,622.44 and 185,623.64

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Solution

The fourth proportional to 691,128.36, 1,036,622.44 and 185,623.64 is: 278,416.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,128.36 : 1,036,622.44 = 185,623.64 : x
  2. Step 2: Convert to fraction form
    691,128.36/1,036,622.44 = 185,623.64/x
  3. Step 3: Cross multiply
    691,128.36x = 1,036,622.44 × 185,623.64
  4. Step 4: Simplify right side
    691,128.36x = 192,421,630,618.48
  5. Step 5: Solve for x
    x = 192,421,630,618.48/691,128.36
  6. Step 6: Final answer
    x = 278,416.63

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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.