Home / 1,189,323.20-1,641,266.85-645,458.87

Finding the Fourth Proportional to 1,189,323.20, 1,641,266.85 and 645,458.87

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Solution

The fourth proportional to 1,189,323.20, 1,641,266.85 and 645,458.87 is: 890,733.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,323.20 : 1,641,266.85 = 645,458.87 : x
  2. Step 2: Convert to fraction form
    1,189,323.20/1,641,266.85 = 645,458.87/x
  3. Step 3: Cross multiply
    1,189,323.20x = 1,641,266.85 × 645,458.87
  4. Step 4: Simplify right side
    1,189,323.20x = 1,059,370,238,163.13
  5. Step 5: Solve for x
    x = 1,059,370,238,163.13/1,189,323.20
  6. Step 6: Final answer
    x = 890,733.69

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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.