Home / 820,403.44-1,230,597.87-287,799.69

Finding the Fourth Proportional to 820,403.44, 1,230,597.87 and 287,799.69

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Solution

The fourth proportional to 820,403.44, 1,230,597.87 and 287,799.69 is: 431,696.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,403.44 : 1,230,597.87 = 287,799.69 : x
  2. Step 2: Convert to fraction form
    820,403.44/1,230,597.87 = 287,799.69/x
  3. Step 3: Cross multiply
    820,403.44x = 1,230,597.87 × 287,799.69
  4. Step 4: Simplify right side
    820,403.44x = 354,165,685,500.66
  5. Step 5: Solve for x
    x = 354,165,685,500.66/820,403.44
  6. Step 6: Final answer
    x = 431,696.98

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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.