Home / 639,986.80-883,176.24-353,526.88

Finding the Fourth Proportional to 639,986.80, 883,176.24 and 353,526.88

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Solution

The fourth proportional to 639,986.80, 883,176.24 and 353,526.88 is: 487,864.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,986.80 : 883,176.24 = 353,526.88 : x
  2. Step 2: Convert to fraction form
    639,986.80/883,176.24 = 353,526.88/x
  3. Step 3: Cross multiply
    639,986.80x = 883,176.24 × 353,526.88
  4. Step 4: Simplify right side
    639,986.80x = 312,226,540,617.33
  5. Step 5: Solve for x
    x = 312,226,540,617.33/639,986.80
  6. Step 6: Final answer
    x = 487,864.03

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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.