Home / 639,913.50-883,005.09-353,416.50

Finding the Fourth Proportional to 639,913.50, 883,005.09 and 353,416.50

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Solution

The fourth proportional to 639,913.50, 883,005.09 and 353,416.50 is: 487,673.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,913.50 : 883,005.09 = 353,416.50 : x
  2. Step 2: Convert to fraction form
    639,913.50/883,005.09 = 353,416.50/x
  3. Step 3: Cross multiply
    639,913.50x = 883,005.09 × 353,416.50
  4. Step 4: Simplify right side
    639,913.50x = 312,068,568,389.99
  5. Step 5: Solve for x
    x = 312,068,568,389.99/639,913.50
  6. Step 6: Final answer
    x = 487,673.05

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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.