Finding the Fourth Proportional to 7,887,781.75, 10,885,139.63 and 4,266,109.75
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Solution
The fourth proportional to 7,887,781.75, 10,885,139.63 and 4,266,109.75 is: 5,887,231.90
Step by Step Solution
- Step 1: Write the proportion equation
7,887,781.75 : 10,885,139.63 = 4,266,109.75 : x - Step 2: Convert to fraction form
7,887,781.75/10,885,139.63 = 4,266,109.75/x - Step 3: Cross multiply
7,887,781.75x = 10,885,139.63 × 4,266,109.75 - Step 4: Simplify right side
7,887,781.75x = 46,437,200,305,654.40 - Step 5: Solve for x
x = 46,437,200,305,654.40/7,887,781.75 - Step 6: Final answer
x = 5,887,231.90
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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.