Home / 1,319,390.51-1,819,820.52-1,210,845.65

Finding the Fourth Proportional to 1,319,390.51, 1,819,820.52 and 1,210,845.65

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Solution

The fourth proportional to 1,319,390.51, 1,819,820.52 and 1,210,845.65 is: 1,670,105.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,390.51 : 1,819,820.52 = 1,210,845.65 : x
  2. Step 2: Convert to fraction form
    1,319,390.51/1,819,820.52 = 1,210,845.65/x
  3. Step 3: Cross multiply
    1,319,390.51x = 1,819,820.52 × 1,210,845.65
  4. Step 4: Simplify right side
    1,319,390.51x = 2,203,521,751,323.64
  5. Step 5: Solve for x
    x = 2,203,521,751,323.64/1,319,390.51
  6. Step 6: Final answer
    x = 1,670,105.81

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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.