Home / 853,715.61-1,280,623.53-321,241.25

Finding the Fourth Proportional to 853,715.61, 1,280,623.53 and 321,241.25

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Solution

The fourth proportional to 853,715.61, 1,280,623.53 and 321,241.25 is: 481,880.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,715.61 : 1,280,623.53 = 321,241.25 : x
  2. Step 2: Convert to fraction form
    853,715.61/1,280,623.53 = 321,241.25/x
  3. Step 3: Cross multiply
    853,715.61x = 1,280,623.53 × 321,241.25
  4. Step 4: Simplify right side
    853,715.61x = 411,389,097,153.50
  5. Step 5: Solve for x
    x = 411,389,097,153.50/853,715.61
  6. Step 6: Final answer
    x = 481,880.73

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Double scale
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1.5x scale

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.