Home / 1,398,632.88-1,930,419-889,235.76

Finding the Fourth Proportional to 1,398,632.88, 1,930,419 and 889,235.76

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Solution

The fourth proportional to 1,398,632.88, 1,930,419 and 889,235.76 is: 1,227,339.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,632.88 : 1,930,419 = 889,235.76 : x
  2. Step 2: Convert to fraction form
    1,398,632.88/1,930,419 = 889,235.76/x
  3. Step 3: Cross multiply
    1,398,632.88x = 1,930,419 × 889,235.76
  4. Step 4: Simplify right side
    1,398,632.88x = 1,716,597,606,583.44
  5. Step 5: Solve for x
    x = 1,716,597,606,583.44/1,398,632.88
  6. Step 6: Final answer
    x = 1,227,339.66

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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.