Home / 1,245,799.69-1,868,855.36-487,543.21

Finding the Fourth Proportional to 1,245,799.69, 1,868,855.36 and 487,543.21

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Solution

The fourth proportional to 1,245,799.69, 1,868,855.36 and 487,543.21 is: 731,375.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,799.69 : 1,868,855.36 = 487,543.21 : x
  2. Step 2: Convert to fraction form
    1,245,799.69/1,868,855.36 = 487,543.21/x
  3. Step 3: Cross multiply
    1,245,799.69x = 1,868,855.36 × 487,543.21
  4. Step 4: Simplify right side
    1,245,799.69x = 911,147,741,240.11
  5. Step 5: Solve for x
    x = 911,147,741,240.11/1,245,799.69
  6. Step 6: Final answer
    x = 731,375.80

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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.