Home / 853,476.55-1,280,405.48-321,002.19

Finding the Fourth Proportional to 853,476.55, 1,280,405.48 and 321,002.19

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Solution

The fourth proportional to 853,476.55, 1,280,405.48 and 321,002.19 is: 481,574.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,476.55 : 1,280,405.48 = 321,002.19 : x
  2. Step 2: Convert to fraction form
    853,476.55/1,280,405.48 = 321,002.19/x
  3. Step 3: Cross multiply
    853,476.55x = 1,280,405.48 × 321,002.19
  4. Step 4: Simplify right side
    853,476.55x = 411,012,961,562.99
  5. Step 5: Solve for x
    x = 411,012,961,562.99/853,476.55
  6. Step 6: Final answer
    x = 481,574.99

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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.