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Finding the Fourth Proportional to 538,674.96, 743,438.76 and 309,304.07

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Solution

The fourth proportional to 538,674.96, 743,438.76 and 309,304.07 is: 426,878.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,674.96 : 743,438.76 = 309,304.07 : x
  2. Step 2: Convert to fraction form
    538,674.96/743,438.76 = 309,304.07/x
  3. Step 3: Cross multiply
    538,674.96x = 743,438.76 × 309,304.07
  4. Step 4: Simplify right side
    538,674.96x = 229,948,632,174.56
  5. Step 5: Solve for x
    x = 229,948,632,174.56/538,674.96
  6. Step 6: Final answer
    x = 426,878.27

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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.