Home / 1,279,603.46-1,919,208.36-426,689.94

Finding the Fourth Proportional to 1,279,603.46, 1,919,208.36 and 426,689.94

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Solution

The fourth proportional to 1,279,603.46, 1,919,208.36 and 426,689.94 is: 639,969.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,603.46 : 1,919,208.36 = 426,689.94 : x
  2. Step 2: Convert to fraction form
    1,279,603.46/1,919,208.36 = 426,689.94/x
  3. Step 3: Cross multiply
    1,279,603.46x = 1,919,208.36 × 426,689.94
  4. Step 4: Simplify right side
    1,279,603.46x = 818,906,899,975.90
  5. Step 5: Solve for x
    x = 818,906,899,975.90/1,279,603.46
  6. Step 6: Final answer
    x = 639,969.28

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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.