Home / 1,139,770.20-1,574,221.32-911,119.35

Finding the Fourth Proportional to 1,139,770.20, 1,574,221.32 and 911,119.35

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Solution

The fourth proportional to 1,139,770.20, 1,574,221.32 and 911,119.35 is: 1,258,414.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139,770.20 : 1,574,221.32 = 911,119.35 : x
  2. Step 2: Convert to fraction form
    1,139,770.20/1,574,221.32 = 911,119.35/x
  3. Step 3: Cross multiply
    1,139,770.20x = 1,574,221.32 × 911,119.35
  4. Step 4: Simplify right side
    1,139,770.20x = 1,434,303,505,834.54
  5. Step 5: Solve for x
    x = 1,434,303,505,834.54/1,139,770.20
  6. Step 6: Final answer
    x = 1,258,414.64

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Double scale
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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.