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Finding the Fourth Proportional to 485,137.36, 669,767.40 and 324,264.88

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Solution

The fourth proportional to 485,137.36, 669,767.40 and 324,264.88 is: 447,671.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,137.36 : 669,767.40 = 324,264.88 : x
  2. Step 2: Convert to fraction form
    485,137.36/669,767.40 = 324,264.88/x
  3. Step 3: Cross multiply
    485,137.36x = 669,767.40 × 324,264.88
  4. Step 4: Simplify right side
    485,137.36x = 217,182,045,588.91
  5. Step 5: Solve for x
    x = 217,182,045,588.91/485,137.36
  6. Step 6: Final answer
    x = 447,671.24

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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.