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Finding the Fourth Proportional to 322,971.80, 487,491.34 and 322,971.80

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Solution

The fourth proportional to 322,971.80, 487,491.34 and 322,971.80 is: 487,491.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,971.80 : 487,491.34 = 322,971.80 : x
  2. Step 2: Convert to fraction form
    322,971.80/487,491.34 = 322,971.80/x
  3. Step 3: Cross multiply
    322,971.80x = 487,491.34 × 322,971.80
  4. Step 4: Simplify right side
    322,971.80x = 157,445,955,564.21
  5. Step 5: Solve for x
    x = 157,445,955,564.21/322,971.80
  6. Step 6: Final answer
    x = 487,491.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.