Finding the Fourth Proportional to 1,288,431.68, 1,778,094.90 and 715,474.10
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Solution
The fourth proportional to 1,288,431.68, 1,778,094.90 and 715,474.10 is: 987,387.12
Step by Step Solution
- Step 1: Write the proportion equation
1,288,431.68 : 1,778,094.90 = 715,474.10 : x - Step 2: Convert to fraction form
1,288,431.68/1,778,094.90 = 715,474.10/x - Step 3: Cross multiply
1,288,431.68x = 1,778,094.90 × 715,474.10 - Step 4: Simplify right side
1,288,431.68x = 1,272,180,848,292.09 - Step 5: Solve for x
x = 1,272,180,848,292.09/1,288,431.68 - Step 6: Final answer
x = 987,387.12
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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.