Home / 1,395,938.70-1,925,904.69-912,786.66

Finding the Fourth Proportional to 1,395,938.70, 1,925,904.69 and 912,786.66

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Solution

The fourth proportional to 1,395,938.70, 1,925,904.69 and 912,786.66 is: 1,259,324.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,395,938.70 : 1,925,904.69 = 912,786.66 : x
  2. Step 2: Convert to fraction form
    1,395,938.70/1,925,904.69 = 912,786.66/x
  3. Step 3: Cross multiply
    1,395,938.70x = 1,925,904.69 × 912,786.66
  4. Step 4: Simplify right side
    1,395,938.70x = 1,757,940,109,463.44
  5. Step 5: Solve for x
    x = 1,757,940,109,463.44/1,395,938.70
  6. Step 6: Final answer
    x = 1,259,324.72

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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.