Home / 1,405,358.31-1,939,392.23-760,778.33

Finding the Fourth Proportional to 1,405,358.31, 1,939,392.23 and 760,778.33

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Solution

The fourth proportional to 1,405,358.31, 1,939,392.23 and 760,778.33 is: 1,049,872.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405,358.31 : 1,939,392.23 = 760,778.33 : x
  2. Step 2: Convert to fraction form
    1,405,358.31/1,939,392.23 = 760,778.33/x
  3. Step 3: Cross multiply
    1,405,358.31x = 1,939,392.23 × 760,778.33
  4. Step 4: Simplify right side
    1,405,358.31x = 1,475,447,588,704.80
  5. Step 5: Solve for x
    x = 1,475,447,588,704.80/1,405,358.31
  6. Step 6: Final answer
    x = 1,049,872.89

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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.