Home / 712,201.72-982,838.60-389,932.28

Finding the Fourth Proportional to 712,201.72, 982,838.60 and 389,932.28

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Solution

The fourth proportional to 712,201.72, 982,838.60 and 389,932.28 is: 538,106.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,201.72 : 982,838.60 = 389,932.28 : x
  2. Step 2: Convert to fraction form
    712,201.72/982,838.60 = 389,932.28/x
  3. Step 3: Cross multiply
    712,201.72x = 982,838.60 × 389,932.28
  4. Step 4: Simplify right side
    712,201.72x = 383,240,496,170.01
  5. Step 5: Solve for x
    x = 383,240,496,170.01/712,201.72
  6. Step 6: Final answer
    x = 538,106.67

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1.5x scale

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.