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Finding the Fourth Proportional to 638,507.58, 881,146.42 and 352,037.90

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Solution

The fourth proportional to 638,507.58, 881,146.42 and 352,037.90 is: 485,815.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,507.58 : 881,146.42 = 352,037.90 : x
  2. Step 2: Convert to fraction form
    638,507.58/881,146.42 = 352,037.90/x
  3. Step 3: Cross multiply
    638,507.58x = 881,146.42 × 352,037.90
  4. Step 4: Simplify right side
    638,507.58x = 310,196,930,003.49
  5. Step 5: Solve for x
    x = 310,196,930,003.49/638,507.58
  6. Step 6: Final answer
    x = 485,815.58

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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.