Home / 705,362.56-1,057,836.48-389,760.64

Finding the Fourth Proportional to 705,362.56, 1,057,836.48 and 389,760.64

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Solution

The fourth proportional to 705,362.56, 1,057,836.48 and 389,760.64 is: 584,526.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,362.56 : 1,057,836.48 = 389,760.64 : x
  2. Step 2: Convert to fraction form
    705,362.56/1,057,836.48 = 389,760.64/x
  3. Step 3: Cross multiply
    705,362.56x = 1,057,836.48 × 389,760.64
  4. Step 4: Simplify right side
    705,362.56x = 412,303,023,460.15
  5. Step 5: Solve for x
    x = 412,303,023,460.15/705,362.56
  6. Step 6: Final answer
    x = 584,526.38

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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.