Home / 685,149.12-1,028,017.56-264,720.24

Finding the Fourth Proportional to 685,149.12, 1,028,017.56 and 264,720.24

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Solution

The fourth proportional to 685,149.12, 1,028,017.56 and 264,720.24 is: 397,193.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,149.12 : 1,028,017.56 = 264,720.24 : x
  2. Step 2: Convert to fraction form
    685,149.12/1,028,017.56 = 264,720.24/x
  3. Step 3: Cross multiply
    685,149.12x = 1,028,017.56 × 264,720.24
  4. Step 4: Simplify right side
    685,149.12x = 272,137,055,207.41
  5. Step 5: Solve for x
    x = 272,137,055,207.41/685,149.12
  6. Step 6: Final answer
    x = 397,193.91

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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.