Home / 1,190,739.46-1,643,213.88-646,870.90

Finding the Fourth Proportional to 1,190,739.46, 1,643,213.88 and 646,870.90

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Solution

The fourth proportional to 1,190,739.46, 1,643,213.88 and 646,870.90 is: 892,678.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190,739.46 : 1,643,213.88 = 646,870.90 : x
  2. Step 2: Convert to fraction form
    1,190,739.46/1,643,213.88 = 646,870.90/x
  3. Step 3: Cross multiply
    1,190,739.46x = 1,643,213.88 × 646,870.90
  4. Step 4: Simplify right side
    1,190,739.46x = 1,062,947,241,448.09
  5. Step 5: Solve for x
    x = 1,062,947,241,448.09/1,190,739.46
  6. Step 6: Final answer
    x = 892,678.27

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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.