Finding the Fourth Proportional to 1,218,690.84, 1,828,261.08 and 408,995.40
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Solution
The fourth proportional to 1,218,690.84, 1,828,261.08 and 408,995.40 is: 613,568.55
Step by Step Solution
- Step 1: Write the proportion equation
1,218,690.84 : 1,828,261.08 = 408,995.40 : x - Step 2: Convert to fraction form
1,218,690.84/1,828,261.08 = 408,995.40/x - Step 3: Cross multiply
1,218,690.84x = 1,828,261.08 × 408,995.40 - Step 4: Simplify right side
1,218,690.84x = 747,750,371,719.03 - Step 5: Solve for x
x = 747,750,371,719.03/1,218,690.84 - Step 6: Final answer
x = 613,568.55
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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.