Home / 639,913.75-883,005.44-353,416.75

Finding the Fourth Proportional to 639,913.75, 883,005.44 and 353,416.75

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Solution

The fourth proportional to 639,913.75, 883,005.44 and 353,416.75 is: 487,673.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,913.75 : 883,005.44 = 353,416.75 : x
  2. Step 2: Convert to fraction form
    639,913.75/883,005.44 = 353,416.75/x
  3. Step 3: Cross multiply
    639,913.75x = 883,005.44 × 353,416.75
  4. Step 4: Simplify right side
    639,913.75x = 312,068,908,862.52
  5. Step 5: Solve for x
    x = 312,068,908,862.52/639,913.75
  6. Step 6: Final answer
    x = 487,673.39

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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.