Finding the Fourth Proportional to 1,121,703.01, 1,679,872.20 and 646,949.05
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Solution
The fourth proportional to 1,121,703.01, 1,679,872.20 and 646,949.05 is: 968,876.53
Step by Step Solution
- Step 1: Write the proportion equation
1,121,703.01 : 1,679,872.20 = 646,949.05 : x - Step 2: Convert to fraction form
1,121,703.01/1,679,872.20 = 646,949.05/x - Step 3: Cross multiply
1,121,703.01x = 1,679,872.20 × 646,949.05 - Step 4: Simplify right side
1,121,703.01x = 1,086,791,723,911.41 - Step 5: Solve for x
x = 1,086,791,723,911.41/1,121,703.01 - Step 6: Final answer
x = 968,876.53
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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.