Home / 1,272,430.80-1,755,910.08-699,466.86

Finding the Fourth Proportional to 1,272,430.80, 1,755,910.08 and 699,466.86

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Solution

The fourth proportional to 1,272,430.80, 1,755,910.08 and 699,466.86 is: 965,239.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,430.80 : 1,755,910.08 = 699,466.86 : x
  2. Step 2: Convert to fraction form
    1,272,430.80/1,755,910.08 = 699,466.86/x
  3. Step 3: Cross multiply
    1,272,430.80x = 1,755,910.08 × 699,466.86
  4. Step 4: Simplify right side
    1,272,430.80x = 1,228,200,910,099.95
  5. Step 5: Solve for x
    x = 1,228,200,910,099.95/1,272,430.80
  6. Step 6: Final answer
    x = 965,239.85

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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.