Home / 639,804.96-882,944.64-353,343.36

Finding the Fourth Proportional to 639,804.96, 882,944.64 and 353,343.36

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Solution

The fourth proportional to 639,804.96, 882,944.64 and 353,343.36 is: 487,621.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,804.96 : 882,944.64 = 353,343.36 : x
  2. Step 2: Convert to fraction form
    639,804.96/882,944.64 = 353,343.36/x
  3. Step 3: Cross multiply
    639,804.96x = 882,944.64 × 353,343.36
  4. Step 4: Simplify right side
    639,804.96x = 311,982,625,791.59
  5. Step 5: Solve for x
    x = 311,982,625,791.59/639,804.96
  6. Step 6: Final answer
    x = 487,621.46

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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.