Finding the Fourth Proportional to 792,125,186.20, 1,188,187,779.30 and 720,699,515.80
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Solution
The fourth proportional to 792,125,186.20, 1,188,187,779.30 and 720,699,515.80 is: 1,081,049,273.70
Step by Step Solution
- Step 1: Write the proportion equation
792,125,186.20 : 1,188,187,779.30 = 720,699,515.80 : x - Step 2: Convert to fraction form
792,125,186.20/1,188,187,779.30 = 720,699,515.80/x - Step 3: Cross multiply
792,125,186.20x = 1,188,187,779.30 × 720,699,515.80 - Step 4: Simplify right side
792,125,186.20x = 856,326,357,220,987,136 - Step 5: Solve for x
x = 856,326,357,220,987,136/792,125,186.20 - Step 6: Final answer
x = 1,081,049,273.70
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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.