Home / 677,720.13-1,015,976.13-257,291.25

Finding the Fourth Proportional to 677,720.13, 1,015,976.13 and 257,291.25

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Solution

The fourth proportional to 677,720.13, 1,015,976.13 and 257,291.25 is: 385,707.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,720.13 : 1,015,976.13 = 257,291.25 : x
  2. Step 2: Convert to fraction form
    677,720.13/1,015,976.13 = 257,291.25/x
  3. Step 3: Cross multiply
    677,720.13x = 1,015,976.13 × 257,291.25
  4. Step 4: Simplify right side
    677,720.13x = 261,401,765,130.37
  5. Step 5: Solve for x
    x = 261,401,765,130.37/677,720.13
  6. Step 6: Final answer
    x = 385,707.54

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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.