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Finding the Fourth Proportional to 326,969, 487,592.21 and 323,979.56

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Solution

The fourth proportional to 326,969, 487,592.21 and 323,979.56 is: 483,134.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,969 : 487,592.21 = 323,979.56 : x
  2. Step 2: Convert to fraction form
    326,969/487,592.21 = 323,979.56/x
  3. Step 3: Cross multiply
    326,969x = 487,592.21 × 323,979.56
  4. Step 4: Simplify right side
    326,969x = 157,969,909,655.23
  5. Step 5: Solve for x
    x = 157,969,909,655.23/326,969
  6. Step 6: Final answer
    x = 483,134.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.