Home / 479,580.13-661,869.12-411,821.41

Finding the Fourth Proportional to 479,580.13, 661,869.12 and 411,821.41

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Solution

The fourth proportional to 479,580.13, 661,869.12 and 411,821.41 is: 568,355.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,580.13 : 661,869.12 = 411,821.41 : x
  2. Step 2: Convert to fraction form
    479,580.13/661,869.12 = 411,821.41/x
  3. Step 3: Cross multiply
    479,580.13x = 661,869.12 × 411,821.41
  4. Step 4: Simplify right side
    479,580.13x = 272,571,874,233.86
  5. Step 5: Solve for x
    x = 272,571,874,233.86/479,580.13
  6. Step 6: Final answer
    x = 568,355.23

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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.