Finding the Fourth Proportional to 2,160,456.40, 3,239,129.40 and 1,214,117.20
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Solution
The fourth proportional to 2,160,456.40, 3,239,129.40 and 1,214,117.20 is: 1,820,301.82
Step by Step Solution
- Step 1: Write the proportion equation
2,160,456.40 : 3,239,129.40 = 1,214,117.20 : x - Step 2: Convert to fraction form
2,160,456.40/3,239,129.40 = 1,214,117.20/x - Step 3: Cross multiply
2,160,456.40x = 3,239,129.40 × 1,214,117.20 - Step 4: Simplify right side
2,160,456.40x = 3,932,682,717,565.68 - Step 5: Solve for x
x = 3,932,682,717,565.68/2,160,456.40 - Step 6: Final answer
x = 1,820,301.82
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.