Finding the Fourth Proportional to 1,288,436.68, 1,778,101.80 and 715,479.10
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Solution
The fourth proportional to 1,288,436.68, 1,778,101.80 and 715,479.10 is: 987,394.02
Step by Step Solution
- Step 1: Write the proportion equation
1,288,436.68 : 1,778,101.80 = 715,479.10 : x - Step 2: Convert to fraction form
1,288,436.68/1,778,101.80 = 715,479.10/x - Step 3: Cross multiply
1,288,436.68x = 1,778,101.80 × 715,479.10 - Step 4: Simplify right side
1,288,436.68x = 1,272,194,675,572.38 - Step 5: Solve for x
x = 1,272,194,675,572.38/1,288,436.68 - Step 6: Final answer
x = 987,394.02
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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.