Home / 1,188,205.80-1,782,308.70-389,294.70

Finding the Fourth Proportional to 1,188,205.80, 1,782,308.70 and 389,294.70

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Solution

The fourth proportional to 1,188,205.80, 1,782,308.70 and 389,294.70 is: 583,942.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,205.80 : 1,782,308.70 = 389,294.70 : x
  2. Step 2: Convert to fraction form
    1,188,205.80/1,782,308.70 = 389,294.70/x
  3. Step 3: Cross multiply
    1,188,205.80x = 1,782,308.70 × 389,294.70
  4. Step 4: Simplify right side
    1,188,205.80x = 693,843,330,673.89
  5. Step 5: Solve for x
    x = 693,843,330,673.89/1,188,205.80
  6. Step 6: Final answer
    x = 583,942.05

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Double scale
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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.