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Finding the Fourth Proportional to 638,674.63, 881,330.75 and 366,551

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Solution

The fourth proportional to 638,674.63, 881,330.75 and 366,551 is: 505,817.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,674.63 : 881,330.75 = 366,551 : x
  2. Step 2: Convert to fraction form
    638,674.63/881,330.75 = 366,551/x
  3. Step 3: Cross multiply
    638,674.63x = 881,330.75 × 366,551
  4. Step 4: Simplify right side
    638,674.63x = 323,052,667,743.25
  5. Step 5: Solve for x
    x = 323,052,667,743.25/638,674.63
  6. Step 6: Final answer
    x = 505,817.29

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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.