Home / 902,770.80-1,245,779.96-520,920.88

Finding the Fourth Proportional to 902,770.80, 1,245,779.96 and 520,920.88

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Solution

The fourth proportional to 902,770.80, 1,245,779.96 and 520,920.88 is: 718,845.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    902,770.80 : 1,245,779.96 = 520,920.88 : x
  2. Step 2: Convert to fraction form
    902,770.80/1,245,779.96 = 520,920.88/x
  3. Step 3: Cross multiply
    902,770.80x = 1,245,779.96 × 520,920.88
  4. Step 4: Simplify right side
    902,770.80x = 648,952,793,049.57
  5. Step 5: Solve for x
    x = 648,952,793,049.57/902,770.80
  6. Step 6: Final answer
    x = 718,845.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.