Finding the Fourth Proportional to 2,153,442.79, 2,971,883.40 and 1,186,572.82
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Solution
The fourth proportional to 2,153,442.79, 2,971,883.40 and 1,186,572.82 is: 1,637,543.42
Step by Step Solution
- Step 1: Write the proportion equation
2,153,442.79 : 2,971,883.40 = 1,186,572.82 : x - Step 2: Convert to fraction form
2,153,442.79/2,971,883.40 = 1,186,572.82/x - Step 3: Cross multiply
2,153,442.79x = 2,971,883.40 × 1,186,572.82 - Step 4: Simplify right side
2,153,442.79x = 3,526,356,066,649.19 - Step 5: Solve for x
x = 3,526,356,066,649.19/2,153,442.79 - Step 6: Final answer
x = 1,637,543.42
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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.