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Finding the Fourth Proportional to 638,443.60, 957,588.60 and 264,427.60

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Solution

The fourth proportional to 638,443.60, 957,588.60 and 264,427.60 is: 396,609.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,443.60 : 957,588.60 = 264,427.60 : x
  2. Step 2: Convert to fraction form
    638,443.60/957,588.60 = 264,427.60/x
  3. Step 3: Cross multiply
    638,443.60x = 957,588.60 × 264,427.60
  4. Step 4: Simplify right side
    638,443.60x = 253,212,855,285.36
  5. Step 5: Solve for x
    x = 253,212,855,285.36/638,443.60
  6. Step 6: Final answer
    x = 396,609.59

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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.