Finding the Fourth Proportional to 1,369,048.80, 1,889,358.12 and 788,358.12
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Solution
The fourth proportional to 1,369,048.80, 1,889,358.12 and 788,358.12 is: 1,087,974.96
Step by Step Solution
- Step 1: Write the proportion equation
1,369,048.80 : 1,889,358.12 = 788,358.12 : x - Step 2: Convert to fraction form
1,369,048.80/1,889,358.12 = 788,358.12/x - Step 3: Cross multiply
1,369,048.80x = 1,889,358.12 × 788,358.12 - Step 4: Simplify right side
1,369,048.80x = 1,489,490,815,489.93 - Step 5: Solve for x
x = 1,489,490,815,489.93/1,369,048.80 - Step 6: Final answer
x = 1,087,974.96
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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.