Finding the Fourth Proportional to 1,388,078.24, 1,915,553.08 and 807,440.70
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Solution
The fourth proportional to 1,388,078.24, 1,915,553.08 and 807,440.70 is: 1,114,271.14
Step by Step Solution
- Step 1: Write the proportion equation
1,388,078.24 : 1,915,553.08 = 807,440.70 : x - Step 2: Convert to fraction form
1,388,078.24/1,915,553.08 = 807,440.70/x - Step 3: Cross multiply
1,388,078.24x = 1,915,553.08 × 807,440.70 - Step 4: Simplify right side
1,388,078.24x = 1,546,695,519,802.36 - Step 5: Solve for x
x = 1,546,695,519,802.36/1,388,078.24 - Step 6: Final answer
x = 1,114,271.14
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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.