Finding the Fourth Proportional to 1,228,678.12, 1,695,435.63 and 712,324.35
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Solution
The fourth proportional to 1,228,678.12, 1,695,435.63 and 712,324.35 is: 982,926.34
Step by Step Solution
- Step 1: Write the proportion equation
1,228,678.12 : 1,695,435.63 = 712,324.35 : x - Step 2: Convert to fraction form
1,228,678.12/1,695,435.63 = 712,324.35/x - Step 3: Cross multiply
1,228,678.12x = 1,695,435.63 × 712,324.35 - Step 4: Simplify right side
1,228,678.12x = 1,207,700,087,207.20 - Step 5: Solve for x
x = 1,207,700,087,207.20/1,228,678.12 - Step 6: Final answer
x = 982,926.34
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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.