Home / 1,378,400.72-1,901,914.08-805,330.16

Finding the Fourth Proportional to 1,378,400.72, 1,901,914.08 and 805,330.16

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Solution

The fourth proportional to 1,378,400.72, 1,901,914.08 and 805,330.16 is: 1,111,192.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,400.72 : 1,901,914.08 = 805,330.16 : x
  2. Step 2: Convert to fraction form
    1,378,400.72/1,901,914.08 = 805,330.16/x
  3. Step 3: Cross multiply
    1,378,400.72x = 1,901,914.08 × 805,330.16
  4. Step 4: Simplify right side
    1,378,400.72x = 1,531,668,770,352.65
  5. Step 5: Solve for x
    x = 1,531,668,770,352.65/1,378,400.72
  6. Step 6: Final answer
    x = 1,111,192.67

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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.