Home / 820,004.70-1,230,237.45-399,294.30

Finding the Fourth Proportional to 820,004.70, 1,230,237.45 and 399,294.30

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Solution

The fourth proportional to 820,004.70, 1,230,237.45 and 399,294.30 is: 599,053.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,004.70 : 1,230,237.45 = 399,294.30 : x
  2. Step 2: Convert to fraction form
    820,004.70/1,230,237.45 = 399,294.30/x
  3. Step 3: Cross multiply
    820,004.70x = 1,230,237.45 × 399,294.30
  4. Step 4: Simplify right side
    820,004.70x = 491,226,801,431.54
  5. Step 5: Solve for x
    x = 491,226,801,431.54/820,004.70
  6. Step 6: Final answer
    x = 599,053.64

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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.