Home / 1,188,101.70-1,782,152.55-389,409.30

Finding the Fourth Proportional to 1,188,101.70, 1,782,152.55 and 389,409.30

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Solution

The fourth proportional to 1,188,101.70, 1,782,152.55 and 389,409.30 is: 584,113.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,101.70 : 1,782,152.55 = 389,409.30 : x
  2. Step 2: Convert to fraction form
    1,188,101.70/1,782,152.55 = 389,409.30/x
  3. Step 3: Cross multiply
    1,188,101.70x = 1,782,152.55 × 389,409.30
  4. Step 4: Simplify right side
    1,188,101.70x = 693,986,776,988.72
  5. Step 5: Solve for x
    x = 693,986,776,988.72/1,188,101.70
  6. Step 6: Final answer
    x = 584,113.95

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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.