Home / 1,137,739.68-1,570,050.78-628,431.12

Finding the Fourth Proportional to 1,137,739.68, 1,570,050.78 and 628,431.12

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Solution

The fourth proportional to 1,137,739.68, 1,570,050.78 and 628,431.12 is: 867,218.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,137,739.68 : 1,570,050.78 = 628,431.12 : x
  2. Step 2: Convert to fraction form
    1,137,739.68/1,570,050.78 = 628,431.12/x
  3. Step 3: Cross multiply
    1,137,739.68x = 1,570,050.78 × 628,431.12
  4. Step 4: Simplify right side
    1,137,739.68x = 986,668,770,132.27
  5. Step 5: Solve for x
    x = 986,668,770,132.27/1,137,739.68
  6. Step 6: Final answer
    x = 867,218.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.