Home / 1,378,830.62-1,902,164.37-805,613.06

Finding the Fourth Proportional to 1,378,830.62, 1,902,164.37 and 805,613.06

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Solution

The fourth proportional to 1,378,830.62, 1,902,164.37 and 805,613.06 is: 1,111,382.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,830.62 : 1,902,164.37 = 805,613.06 : x
  2. Step 2: Convert to fraction form
    1,378,830.62/1,902,164.37 = 805,613.06/x
  3. Step 3: Cross multiply
    1,378,830.62x = 1,902,164.37 × 805,613.06
  4. Step 4: Simplify right side
    1,378,830.62x = 1,532,408,458,738.67
  5. Step 5: Solve for x
    x = 1,532,408,458,738.67/1,378,830.62
  6. Step 6: Final answer
    x = 1,111,382.67

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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.