Home / 638,507.43-881,146.26-352,037.79

Finding the Fourth Proportional to 638,507.43, 881,146.26 and 352,037.79

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Solution

The fourth proportional to 638,507.43, 881,146.26 and 352,037.79 is: 485,815.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,507.43 : 881,146.26 = 352,037.79 : x
  2. Step 2: Convert to fraction form
    638,507.43/881,146.26 = 352,037.79/x
  3. Step 3: Cross multiply
    638,507.43x = 881,146.26 × 352,037.79
  4. Step 4: Simplify right side
    638,507.43x = 310,196,782,037.17
  5. Step 5: Solve for x
    x = 310,196,782,037.17/638,507.43
  6. Step 6: Final answer
    x = 485,815.46

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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.