Home / 1,279,317.73-1,918,334.85-426,089.41

Finding the Fourth Proportional to 1,279,317.73, 1,918,334.85 and 426,089.41

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Solution

The fourth proportional to 1,279,317.73, 1,918,334.85 and 426,089.41 is: 638,920.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,317.73 : 1,918,334.85 = 426,089.41 : x
  2. Step 2: Convert to fraction form
    1,279,317.73/1,918,334.85 = 426,089.41/x
  3. Step 3: Cross multiply
    1,279,317.73x = 1,918,334.85 × 426,089.41
  4. Step 4: Simplify right side
    1,279,317.73x = 817,382,164,418.94
  5. Step 5: Solve for x
    x = 817,382,164,418.94/1,279,317.73
  6. Step 6: Final answer
    x = 638,920.38

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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.