Home / 839,218.64-1,258,826.82-389,693.70

Finding the Fourth Proportional to 839,218.64, 1,258,826.82 and 389,693.70

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Solution

The fourth proportional to 839,218.64, 1,258,826.82 and 389,693.70 is: 584,540.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,218.64 : 1,258,826.82 = 389,693.70 : x
  2. Step 2: Convert to fraction form
    839,218.64/1,258,826.82 = 389,693.70/x
  3. Step 3: Cross multiply
    839,218.64x = 1,258,826.82 × 389,693.70
  4. Step 4: Simplify right side
    839,218.64x = 490,556,881,145.03
  5. Step 5: Solve for x
    x = 490,556,881,145.03/839,218.64
  6. Step 6: Final answer
    x = 584,540.02

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1.5x scale

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.