Home / 1,189,173.67-1,641,064.12-645,309.57

Finding the Fourth Proportional to 1,189,173.67, 1,641,064.12 and 645,309.57

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Solution

The fourth proportional to 1,189,173.67, 1,641,064.12 and 645,309.57 is: 890,529.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,173.67 : 1,641,064.12 = 645,309.57 : x
  2. Step 2: Convert to fraction form
    1,189,173.67/1,641,064.12 = 645,309.57/x
  3. Step 3: Cross multiply
    1,189,173.67x = 1,641,064.12 × 645,309.57
  4. Step 4: Simplify right side
    1,189,173.67x = 1,058,994,381,619.63
  5. Step 5: Solve for x
    x = 1,058,994,381,619.63/1,189,173.67
  6. Step 6: Final answer
    x = 890,529.62

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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.