Finding the Fourth Proportional to 2,158,830.36, 2,979,302.58 and 1,191,957.66
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Solution
The fourth proportional to 2,158,830.36, 2,979,302.58 and 1,191,957.66 is: 1,644,966.00
Step by Step Solution
- Step 1: Write the proportion equation
2,158,830.36 : 2,979,302.58 = 1,191,957.66 : x - Step 2: Convert to fraction form
2,158,830.36/2,979,302.58 = 1,191,957.66/x - Step 3: Cross multiply
2,158,830.36x = 2,979,302.58 × 1,191,957.66 - Step 4: Simplify right side
2,158,830.36x = 3,551,202,531,688.76 - Step 5: Solve for x
x = 3,551,202,531,688.76/2,158,830.36 - Step 6: Final answer
x = 1,644,966.00
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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.