Finding the Fourth Proportional to 1,098,078.12, 1,647,401.14 and 643,053.62
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Solution
The fourth proportional to 1,098,078.12, 1,647,401.14 and 643,053.62 is: 964,746.72
Step by Step Solution
- Step 1: Write the proportion equation
1,098,078.12 : 1,647,401.14 = 643,053.62 : x - Step 2: Convert to fraction form
1,098,078.12/1,647,401.14 = 643,053.62/x - Step 3: Cross multiply
1,098,078.12x = 1,647,401.14 × 643,053.62 - Step 4: Simplify right side
1,098,078.12x = 1,059,367,266,669.13 - Step 5: Solve for x
x = 1,059,367,266,669.13/1,098,078.12 - Step 6: Final answer
x = 964,746.72
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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.