Finding the Fourth Proportional to 728,719.20, 1,092,495.60 and 307,648.80
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Solution
The fourth proportional to 728,719.20, 1,092,495.60 and 307,648.80 is: 461,226.99
Step by Step Solution
- Step 1: Write the proportion equation
728,719.20 : 1,092,495.60 = 307,648.80 : x - Step 2: Convert to fraction form
728,719.20/1,092,495.60 = 307,648.80/x - Step 3: Cross multiply
728,719.20x = 1,092,495.60 × 307,648.80 - Step 4: Simplify right side
728,719.20x = 336,104,960,345.28 - Step 5: Solve for x
x = 336,104,960,345.28/728,719.20 - Step 6: Final answer
x = 461,226.99
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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.