Home / 679,804.51-1,018,788.20-258,850.75

Finding the Fourth Proportional to 679,804.51, 1,018,788.20 and 258,850.75

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Solution

The fourth proportional to 679,804.51, 1,018,788.20 and 258,850.75 is: 387,926.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,804.51 : 1,018,788.20 = 258,850.75 : x
  2. Step 2: Convert to fraction form
    679,804.51/1,018,788.20 = 258,850.75/x
  3. Step 3: Cross multiply
    679,804.51x = 1,018,788.20 × 258,850.75
  4. Step 4: Simplify right side
    679,804.51x = 263,714,089,661.15
  5. Step 5: Solve for x
    x = 263,714,089,661.15/679,804.51
  6. Step 6: Final answer
    x = 387,926.36

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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.