Home / 1,405,287.07-2,107,615.39-646,399.74

Finding the Fourth Proportional to 1,405,287.07, 2,107,615.39 and 646,399.74

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Solution

The fourth proportional to 1,405,287.07, 2,107,615.39 and 646,399.74 is: 969,454.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405,287.07 : 2,107,615.39 = 646,399.74 : x
  2. Step 2: Convert to fraction form
    1,405,287.07/2,107,615.39 = 646,399.74/x
  3. Step 3: Cross multiply
    1,405,287.07x = 2,107,615.39 × 646,399.74
  4. Step 4: Simplify right side
    1,405,287.07x = 1,362,362,050,039.56
  5. Step 5: Solve for x
    x = 1,362,362,050,039.56/1,405,287.07
  6. Step 6: Final answer
    x = 969,454.62

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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.