Finding the Fourth Proportional to 1,310,731.19, 1,966,166.85 and 412,242.99
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Solution
The fourth proportional to 1,310,731.19, 1,966,166.85 and 412,242.99 is: 618,386.53
Step by Step Solution
- Step 1: Write the proportion equation
1,310,731.19 : 1,966,166.85 = 412,242.99 : x - Step 2: Convert to fraction form
1,310,731.19/1,966,166.85 = 412,242.99/x - Step 3: Cross multiply
1,310,731.19x = 1,966,166.85 × 412,242.99 - Step 4: Simplify right side
1,310,731.19x = 810,538,506,315.36 - Step 5: Solve for x
x = 810,538,506,315.36/1,310,731.19 - Step 6: Final answer
x = 618,386.53
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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.