Finding the Fourth Proportional to 5,355,782.48, 7,387,734.12 and 3,178,891.28
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Solution
The fourth proportional to 5,355,782.48, 7,387,734.12 and 3,178,891.28 is: 4,384,943.50
Step by Step Solution
- Step 1: Write the proportion equation
5,355,782.48 : 7,387,734.12 = 3,178,891.28 : x - Step 2: Convert to fraction form
5,355,782.48/7,387,734.12 = 3,178,891.28/x - Step 3: Cross multiply
5,355,782.48x = 7,387,734.12 × 3,178,891.28 - Step 4: Simplify right side
5,355,782.48x = 23,484,803,573,026.47 - Step 5: Solve for x
x = 23,484,803,573,026.47/5,355,782.48 - Step 6: Final answer
x = 4,384,943.50
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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.