Home / 1,189,173.12-1,641,063.37-645,309.02

Finding the Fourth Proportional to 1,189,173.12, 1,641,063.37 and 645,309.02

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Solution

The fourth proportional to 1,189,173.12, 1,641,063.37 and 645,309.02 is: 890,528.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,173.12 : 1,641,063.37 = 645,309.02 : x
  2. Step 2: Convert to fraction form
    1,189,173.12/1,641,063.37 = 645,309.02/x
  3. Step 3: Cross multiply
    1,189,173.12x = 1,641,063.37 × 645,309.02
  4. Step 4: Simplify right side
    1,189,173.12x = 1,058,992,993,439.32
  5. Step 5: Solve for x
    x = 1,058,992,993,439.32/1,189,173.12
  6. Step 6: Final answer
    x = 890,528.87

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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.