Home / 1,203,187.75-1,660,399.14-666,643.75

Finding the Fourth Proportional to 1,203,187.75, 1,660,399.14 and 666,643.75

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Solution

The fourth proportional to 1,203,187.75, 1,660,399.14 and 666,643.75 is: 919,968.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,203,187.75 : 1,660,399.14 = 666,643.75 : x
  2. Step 2: Convert to fraction form
    1,203,187.75/1,660,399.14 = 666,643.75/x
  3. Step 3: Cross multiply
    1,203,187.75x = 1,660,399.14 × 666,643.75
  4. Step 4: Simplify right side
    1,203,187.75x = 1,106,894,709,186.38
  5. Step 5: Solve for x
    x = 1,106,894,709,186.38/1,203,187.75
  6. Step 6: Final answer
    x = 919,968.40

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1.5x scale

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.