Home / 691,856.20-1,038,221.70-407,546.20

Finding the Fourth Proportional to 691,856.20, 1,038,221.70 and 407,546.20

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Solution

The fourth proportional to 691,856.20, 1,038,221.70 and 407,546.20 is: 611,576.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,856.20 : 1,038,221.70 = 407,546.20 : x
  2. Step 2: Convert to fraction form
    691,856.20/1,038,221.70 = 407,546.20/x
  3. Step 3: Cross multiply
    691,856.20x = 1,038,221.70 × 407,546.20
  4. Step 4: Simplify right side
    691,856.20x = 423,123,308,592.54
  5. Step 5: Solve for x
    x = 423,123,308,592.54/691,856.20
  6. Step 6: Final answer
    x = 611,576.96

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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.