Home / 639,979.52-883,154.85-353,493.45

Finding the Fourth Proportional to 639,979.52, 883,154.85 and 353,493.45

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Solution

The fourth proportional to 639,979.52, 883,154.85 and 353,493.45 is: 487,811.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,979.52 : 883,154.85 = 353,493.45 : x
  2. Step 2: Convert to fraction form
    639,979.52/883,154.85 = 353,493.45/x
  3. Step 3: Cross multiply
    639,979.52x = 883,154.85 × 353,493.45
  4. Step 4: Simplify right side
    639,979.52x = 312,189,454,810.73
  5. Step 5: Solve for x
    x = 312,189,454,810.73/639,979.52
  6. Step 6: Final answer
    x = 487,811.64

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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.