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Finding the Fourth Proportional to 539,991.80, 808,821.30 and 446,679.80

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Solution

The fourth proportional to 539,991.80, 808,821.30 and 446,679.80 is: 669,054.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,991.80 : 808,821.30 = 446,679.80 : x
  2. Step 2: Convert to fraction form
    539,991.80/808,821.30 = 446,679.80/x
  3. Step 3: Cross multiply
    539,991.80x = 808,821.30 × 446,679.80
  4. Step 4: Simplify right side
    539,991.80x = 361,284,136,519.74
  5. Step 5: Solve for x
    x = 361,284,136,519.74/539,991.80
  6. Step 6: Final answer
    x = 669,054.86

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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.