Home / 639,743.04-959,615.64-219,022.56

Finding the Fourth Proportional to 639,743.04, 959,615.64 and 219,022.56

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Solution

The fourth proportional to 639,743.04, 959,615.64 and 219,022.56 is: 328,534.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,743.04 : 959,615.64 = 219,022.56 : x
  2. Step 2: Convert to fraction form
    639,743.04/959,615.64 = 219,022.56/x
  3. Step 3: Cross multiply
    639,743.04x = 959,615.64 × 219,022.56
  4. Step 4: Simplify right side
    639,743.04x = 210,177,474,088.84
  5. Step 5: Solve for x
    x = 210,177,474,088.84/639,743.04
  6. Step 6: Final answer
    x = 328,534.21

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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.