Finding the Fourth Proportional to 1,318,787.81, 1,820,024.92 and 738,069.12
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Solution
The fourth proportional to 1,318,787.81, 1,820,024.92 and 738,069.12 is: 1,018,590.09
Step by Step Solution
- Step 1: Write the proportion equation
1,318,787.81 : 1,820,024.92 = 738,069.12 : x - Step 2: Convert to fraction form
1,318,787.81/1,820,024.92 = 738,069.12/x - Step 3: Cross multiply
1,318,787.81x = 1,820,024.92 × 738,069.12 - Step 4: Simplify right side
1,318,787.81x = 1,343,304,191,082.47 - Step 5: Solve for x
x = 1,343,304,191,082.47/1,318,787.81 - Step 6: Final answer
x = 1,018,590.09
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1.5x scale
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.