Home / 3,018,278.09-4,165,220.78-1,729,123.61

Finding the Fourth Proportional to 3,018,278.09, 4,165,220.78 and 1,729,123.61

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Solution

The fourth proportional to 3,018,278.09, 4,165,220.78 and 1,729,123.61 is: 2,386,188.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,018,278.09 : 4,165,220.78 = 1,729,123.61 : x
  2. Step 2: Convert to fraction form
    3,018,278.09/4,165,220.78 = 1,729,123.61/x
  3. Step 3: Cross multiply
    3,018,278.09x = 4,165,220.78 × 1,729,123.61
  4. Step 4: Simplify right side
    3,018,278.09x = 7,202,181,568,573.11
  5. Step 5: Solve for x
    x = 7,202,181,568,573.11/3,018,278.09
  6. Step 6: Final answer
    x = 2,386,188.86

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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.