Home / 5,190,078.21-7,785,329.40-1,780,709.23

Finding the Fourth Proportional to 5,190,078.21, 7,785,329.40 and 1,780,709.23

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Solution

The fourth proportional to 5,190,078.21, 7,785,329.40 and 1,780,709.23 is: 2,671,136.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,190,078.21 : 7,785,329.40 = 1,780,709.23 : x
  2. Step 2: Convert to fraction form
    5,190,078.21/7,785,329.40 = 1,780,709.23/x
  3. Step 3: Cross multiply
    5,190,078.21x = 7,785,329.40 × 1,780,709.23
  4. Step 4: Simplify right side
    5,190,078.21x = 13,863,407,921,170.36
  5. Step 5: Solve for x
    x = 13,863,407,921,170.36/5,190,078.21
  6. Step 6: Final answer
    x = 2,671,136.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.