Home / 638,123.80-957,185.66-437,836.98

Finding the Fourth Proportional to 638,123.80, 957,185.66 and 437,836.98

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Solution

The fourth proportional to 638,123.80, 957,185.66 and 437,836.98 is: 656,755.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,123.80 : 957,185.66 = 437,836.98 : x
  2. Step 2: Convert to fraction form
    638,123.80/957,185.66 = 437,836.98/x
  3. Step 3: Cross multiply
    638,123.80x = 957,185.66 × 437,836.98
  4. Step 4: Simplify right side
    638,123.80x = 419,091,278,673.71
  5. Step 5: Solve for x
    x = 419,091,278,673.71/638,123.80
  6. Step 6: Final answer
    x = 656,755.44

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.