Home / 638,612.36-881,266.20-352,132.37

Finding the Fourth Proportional to 638,612.36, 881,266.20 and 352,132.37

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Solution

The fourth proportional to 638,612.36, 881,266.20 and 352,132.37 is: 485,932.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,612.36 : 881,266.20 = 352,132.37 : x
  2. Step 2: Convert to fraction form
    638,612.36/881,266.20 = 352,132.37/x
  3. Step 3: Cross multiply
    638,612.36x = 881,266.20 × 352,132.37
  4. Step 4: Simplify right side
    638,612.36x = 310,322,355,606.89
  5. Step 5: Solve for x
    x = 310,322,355,606.89/638,612.36
  6. Step 6: Final answer
    x = 485,932.27

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Double scale
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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.