Home / 638,530.09-881,154.66-352,042.81

Finding the Fourth Proportional to 638,530.09, 881,154.66 and 352,042.81

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Solution

The fourth proportional to 638,530.09, 881,154.66 and 352,042.81 is: 485,809.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,530.09 : 881,154.66 = 352,042.81 : x
  2. Step 2: Convert to fraction form
    638,530.09/881,154.66 = 352,042.81/x
  3. Step 3: Cross multiply
    638,530.09x = 881,154.66 × 352,042.81
  4. Step 4: Simplify right side
    638,530.09x = 310,204,162,551.00
  5. Step 5: Solve for x
    x = 310,204,162,551.00/638,530.09
  6. Step 6: Final answer
    x = 485,809.78

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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.