Finding the Fourth Proportional to 1,288,495.26, 1,778,147.43 and 715,588.74
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Solution
The fourth proportional to 1,288,495.26, 1,778,147.43 and 715,588.74 is: 987,525.77
Step by Step Solution
- Step 1: Write the proportion equation
1,288,495.26 : 1,778,147.43 = 715,588.74 : x - Step 2: Convert to fraction form
1,288,495.26/1,778,147.43 = 715,588.74/x - Step 3: Cross multiply
1,288,495.26x = 1,778,147.43 × 715,588.74 - Step 4: Simplify right side
1,288,495.26x = 1,272,422,278,967.94 - Step 5: Solve for x
x = 1,272,422,278,967.94/1,288,495.26 - Step 6: Final answer
x = 987,525.77
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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.