Home / 639,487.51-882,481.98-353,000.23

Finding the Fourth Proportional to 639,487.51, 882,481.98 and 353,000.23

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Solution

The fourth proportional to 639,487.51, 882,481.98 and 353,000.23 is: 487,134.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,487.51 : 882,481.98 = 353,000.23 : x
  2. Step 2: Convert to fraction form
    639,487.51/882,481.98 = 353,000.23/x
  3. Step 3: Cross multiply
    639,487.51x = 882,481.98 × 353,000.23
  4. Step 4: Simplify right side
    639,487.51x = 311,516,341,910.86
  5. Step 5: Solve for x
    x = 311,516,341,910.86/639,487.51
  6. Step 6: Final answer
    x = 487,134.36

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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.