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Finding the Fourth Proportional to 638,679.80, 957,674.10 and 264,740.60

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Solution

The fourth proportional to 638,679.80, 957,674.10 and 264,740.60 is: 396,967.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,679.80 : 957,674.10 = 264,740.60 : x
  2. Step 2: Convert to fraction form
    638,679.80/957,674.10 = 264,740.60/x
  3. Step 3: Cross multiply
    638,679.80x = 957,674.10 × 264,740.60
  4. Step 4: Simplify right side
    638,679.80x = 253,535,215,838.46
  5. Step 5: Solve for x
    x = 253,535,215,838.46/638,679.80
  6. Step 6: Final answer
    x = 396,967.64

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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.