Home / 853,473.66-1,280,401.17-320,999.30

Finding the Fourth Proportional to 853,473.66, 1,280,401.17 and 320,999.30

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Solution

The fourth proportional to 853,473.66, 1,280,401.17 and 320,999.30 is: 481,570.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,473.66 : 1,280,401.17 = 320,999.30 : x
  2. Step 2: Convert to fraction form
    853,473.66/1,280,401.17 = 320,999.30/x
  3. Step 3: Cross multiply
    853,473.66x = 1,280,401.17 × 320,999.30
  4. Step 4: Simplify right side
    853,473.66x = 411,007,877,684.19
  5. Step 5: Solve for x
    x = 411,007,877,684.19/853,473.66
  6. Step 6: Final answer
    x = 481,570.67

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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.