Finding the Fourth Proportional to 1,390,460.86, 1,917,844.70 and 1,276,108.12
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Solution
The fourth proportional to 1,390,460.86, 1,917,844.70 and 1,276,108.12 is: 1,760,119.44
Step by Step Solution
- Step 1: Write the proportion equation
1,390,460.86 : 1,917,844.70 = 1,276,108.12 : x - Step 2: Convert to fraction form
1,390,460.86/1,917,844.70 = 1,276,108.12/x - Step 3: Cross multiply
1,390,460.86x = 1,917,844.70 × 1,276,108.12 - Step 4: Simplify right side
1,390,460.86x = 2,447,377,194,568.96 - Step 5: Solve for x
x = 2,447,377,194,568.96/1,390,460.86 - Step 6: Final answer
x = 1,760,119.44
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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.