Home / 456,218.40-685,249.20-440,551.20

Finding the Fourth Proportional to 456,218.40, 685,249.20 and 440,551.20

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Solution

The fourth proportional to 456,218.40, 685,249.20 and 440,551.20 is: 661,716.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,218.40 : 685,249.20 = 440,551.20 : x
  2. Step 2: Convert to fraction form
    456,218.40/685,249.20 = 440,551.20/x
  3. Step 3: Cross multiply
    456,218.40x = 685,249.20 × 440,551.20
  4. Step 4: Simplify right side
    456,218.40x = 301,887,357,359.04
  5. Step 5: Solve for x
    x = 301,887,357,359.04/456,218.40
  6. Step 6: Final answer
    x = 661,716.75

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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.