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Finding the Fourth Proportional to 454,012.80, 679,828.80 and 320,167.68

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Solution

The fourth proportional to 454,012.80, 679,828.80 and 320,167.68 is: 479,412.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,012.80 : 679,828.80 = 320,167.68 : x
  2. Step 2: Convert to fraction form
    454,012.80/679,828.80 = 320,167.68/x
  3. Step 3: Cross multiply
    454,012.80x = 679,828.80 × 320,167.68
  4. Step 4: Simplify right side
    454,012.80x = 217,659,209,693.18
  5. Step 5: Solve for x
    x = 217,659,209,693.18/454,012.80
  6. Step 6: Final answer
    x = 479,412.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.