Home / 919,036.88-1,378,775.64-445,168.40

Finding the Fourth Proportional to 919,036.88, 1,378,775.64 and 445,168.40

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Solution

The fourth proportional to 919,036.88, 1,378,775.64 and 445,168.40 is: 667,859.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,036.88 : 1,378,775.64 = 445,168.40 : x
  2. Step 2: Convert to fraction form
    919,036.88/1,378,775.64 = 445,168.40/x
  3. Step 3: Cross multiply
    919,036.88x = 1,378,775.64 × 445,168.40
  4. Step 4: Simplify right side
    919,036.88x = 613,787,345,617.78
  5. Step 5: Solve for x
    x = 613,787,345,617.78/919,036.88
  6. Step 6: Final answer
    x = 667,859.32

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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.