Home / 853,476.15-1,280,404.92-321,001.80

Finding the Fourth Proportional to 853,476.15, 1,280,404.92 and 321,001.80

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Solution

The fourth proportional to 853,476.15, 1,280,404.92 and 321,001.80 is: 481,574.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,476.15 : 1,280,404.92 = 321,001.80 : x
  2. Step 2: Convert to fraction form
    853,476.15/1,280,404.92 = 321,001.80/x
  3. Step 3: Cross multiply
    853,476.15x = 1,280,404.92 × 321,001.80
  4. Step 4: Simplify right side
    853,476.15x = 411,012,284,048.86
  5. Step 5: Solve for x
    x = 411,012,284,048.86/853,476.15
  6. Step 6: Final answer
    x = 481,574.42

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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.