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Finding the Fourth Proportional to 638,313.80, 957,125.10 and 264,374.60

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Solution

The fourth proportional to 638,313.80, 957,125.10 and 264,374.60 is: 396,418.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,313.80 : 957,125.10 = 264,374.60 : x
  2. Step 2: Convert to fraction form
    638,313.80/957,125.10 = 264,374.60/x
  3. Step 3: Cross multiply
    638,313.80x = 957,125.10 × 264,374.60
  4. Step 4: Simplify right side
    638,313.80x = 253,039,565,462.46
  5. Step 5: Solve for x
    x = 253,039,565,462.46/638,313.80
  6. Step 6: Final answer
    x = 396,418.76

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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.