Home / 647,917.44-971,869.14-221,449.20

Finding the Fourth Proportional to 647,917.44, 971,869.14 and 221,449.20

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Solution

The fourth proportional to 647,917.44, 971,869.14 and 221,449.20 is: 332,171.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,917.44 : 971,869.14 = 221,449.20 : x
  2. Step 2: Convert to fraction form
    647,917.44/971,869.14 = 221,449.20/x
  3. Step 3: Cross multiply
    647,917.44x = 971,869.14 × 221,449.20
  4. Step 4: Simplify right side
    647,917.44x = 215,219,643,557.69
  5. Step 5: Solve for x
    x = 215,219,643,557.69/647,917.44
  6. Step 6: Final answer
    x = 332,171.40

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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.