Home / 639,968.28-883,080.54-353,471.28

Finding the Fourth Proportional to 639,968.28, 883,080.54 and 353,471.28

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Solution

The fourth proportional to 639,968.28, 883,080.54 and 353,471.28 is: 487,748.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,968.28 : 883,080.54 = 353,471.28 : x
  2. Step 2: Convert to fraction form
    639,968.28/883,080.54 = 353,471.28/x
  3. Step 3: Cross multiply
    639,968.28x = 883,080.54 × 353,471.28
  4. Step 4: Simplify right side
    639,968.28x = 312,143,608,816.89
  5. Step 5: Solve for x
    x = 312,143,608,816.89/639,968.28
  6. Step 6: Final answer
    x = 487,748.56

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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.