Finding the Fourth Proportional to 2,129,545.62, 2,938,732.92 and 1,211,754.06
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Solution
The fourth proportional to 2,129,545.62, 2,938,732.92 and 1,211,754.06 is: 1,672,197.82
Step by Step Solution
- Step 1: Write the proportion equation
2,129,545.62 : 2,938,732.92 = 1,211,754.06 : x - Step 2: Convert to fraction form
2,129,545.62/2,938,732.92 = 1,211,754.06/x - Step 3: Cross multiply
2,129,545.62x = 2,938,732.92 × 1,211,754.06 - Step 4: Simplify right side
2,129,545.62x = 3,561,021,547,065.66 - Step 5: Solve for x
x = 3,561,021,547,065.66/2,129,545.62 - Step 6: Final answer
x = 1,672,197.82
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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.