Finding the Fourth Proportional to 1,288,781.34, 1,778,320.55 and 744,812.09
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Solution
The fourth proportional to 1,288,781.34, 1,778,320.55 and 744,812.09 is: 1,027,726.42
Step by Step Solution
- Step 1: Write the proportion equation
1,288,781.34 : 1,778,320.55 = 744,812.09 : x - Step 2: Convert to fraction form
1,288,781.34/1,778,320.55 = 744,812.09/x - Step 3: Cross multiply
1,288,781.34x = 1,778,320.55 × 744,812.09 - Step 4: Simplify right side
1,288,781.34x = 1,324,514,635,712.83 - Step 5: Solve for x
x = 1,324,514,635,712.83/1,288,781.34 - Step 6: Final answer
x = 1,027,726.42
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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.