Home / 853,491.86-1,280,428.48-321,017.52

Finding the Fourth Proportional to 853,491.86, 1,280,428.48 and 321,017.52

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Solution

The fourth proportional to 853,491.86, 1,280,428.48 and 321,017.52 is: 481,598.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,491.86 : 1,280,428.48 = 321,017.52 : x
  2. Step 2: Convert to fraction form
    853,491.86/1,280,428.48 = 321,017.52/x
  3. Step 3: Cross multiply
    853,491.86x = 1,280,428.48 × 321,017.52
  4. Step 4: Simplify right side
    853,491.86x = 411,039,975,186.97
  5. Step 5: Solve for x
    x = 411,039,975,186.97/853,491.86
  6. Step 6: Final answer
    x = 481,598.00

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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.