Home / 1,188,218.80-1,782,328.20-389,307.70

Finding the Fourth Proportional to 1,188,218.80, 1,782,328.20 and 389,307.70

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Solution

The fourth proportional to 1,188,218.80, 1,782,328.20 and 389,307.70 is: 583,961.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,218.80 : 1,782,328.20 = 389,307.70 : x
  2. Step 2: Convert to fraction form
    1,188,218.80/1,782,328.20 = 389,307.70/x
  3. Step 3: Cross multiply
    1,188,218.80x = 1,782,328.20 × 389,307.70
  4. Step 4: Simplify right side
    1,188,218.80x = 693,874,092,187.14
  5. Step 5: Solve for x
    x = 693,874,092,187.14/1,188,218.80
  6. Step 6: Final answer
    x = 583,961.55

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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.