Home / 1,378,540.74-1,902,105-805,470.06

Finding the Fourth Proportional to 1,378,540.74, 1,902,105 and 805,470.06

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Solution

The fourth proportional to 1,378,540.74, 1,902,105 and 805,470.06 is: 1,111,384.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,540.74 : 1,902,105 = 805,470.06 : x
  2. Step 2: Convert to fraction form
    1,378,540.74/1,902,105 = 805,470.06/x
  3. Step 3: Cross multiply
    1,378,540.74x = 1,902,105 × 805,470.06
  4. Step 4: Simplify right side
    1,378,540.74x = 1,532,088,628,476.30
  5. Step 5: Solve for x
    x = 1,532,088,628,476.30/1,378,540.74
  6. Step 6: Final answer
    x = 1,111,384.37

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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.