Finding the Fourth Proportional to 2,153,689.05, 2,972,110.55 and 1,186,854.03
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Solution
The fourth proportional to 2,153,689.05, 2,972,110.55 and 1,186,854.03 is: 1,637,869.39
Step by Step Solution
- Step 1: Write the proportion equation
2,153,689.05 : 2,972,110.55 = 1,186,854.03 : x - Step 2: Convert to fraction form
2,153,689.05/2,972,110.55 = 1,186,854.03/x - Step 3: Cross multiply
2,153,689.05x = 2,972,110.55 × 1,186,854.03 - Step 4: Simplify right side
2,153,689.05x = 3,527,461,377,938.75 - Step 5: Solve for x
x = 3,527,461,377,938.75/2,153,689.05 - Step 6: Final answer
x = 1,637,869.39
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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.