Home / 853,474.66-1,280,402.67-321,000.30

Finding the Fourth Proportional to 853,474.66, 1,280,402.67 and 321,000.30

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Solution

The fourth proportional to 853,474.66, 1,280,402.67 and 321,000.30 is: 481,572.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,474.66 : 1,280,402.67 = 321,000.30 : x
  2. Step 2: Convert to fraction form
    853,474.66/1,280,402.67 = 321,000.30/x
  3. Step 3: Cross multiply
    853,474.66x = 1,280,402.67 × 321,000.30
  4. Step 4: Simplify right side
    853,474.66x = 411,009,641,190.80
  5. Step 5: Solve for x
    x = 411,009,641,190.80/853,474.66
  6. Step 6: Final answer
    x = 481,572.17

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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.