Home / 853,475.66-1,280,404.16-321,001.30

Finding the Fourth Proportional to 853,475.66, 1,280,404.16 and 321,001.30

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Solution

The fourth proportional to 853,475.66, 1,280,404.16 and 321,001.30 is: 481,573.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,475.66 : 1,280,404.16 = 321,001.30 : x
  2. Step 2: Convert to fraction form
    853,475.66/1,280,404.16 = 321,001.30/x
  3. Step 3: Cross multiply
    853,475.66x = 1,280,404.16 × 321,001.30
  4. Step 4: Simplify right side
    853,475.66x = 411,011,399,885.41
  5. Step 5: Solve for x
    x = 411,011,399,885.41/853,475.66
  6. Step 6: Final answer
    x = 481,573.66

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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.