Home / 639,669.93-882,721.38-353,183.87

Finding the Fourth Proportional to 639,669.93, 882,721.38 and 353,183.87

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Solution

The fourth proportional to 639,669.93, 882,721.38 and 353,183.87 is: 487,380.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,669.93 : 882,721.38 = 353,183.87 : x
  2. Step 2: Convert to fraction form
    639,669.93/882,721.38 = 353,183.87/x
  3. Step 3: Cross multiply
    639,669.93x = 882,721.38 × 353,183.87
  4. Step 4: Simplify right side
    639,669.93x = 311,762,953,672.07
  5. Step 5: Solve for x
    x = 311,762,953,672.07/639,669.93
  6. Step 6: Final answer
    x = 487,380.97

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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.