Finding the Fourth Proportional to 660,279.48, 911,402.73 and 388,335.75
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Solution
The fourth proportional to 660,279.48, 911,402.73 and 388,335.75 is: 536,030.99
Step by Step Solution
- Step 1: Write the proportion equation
660,279.48 : 911,402.73 = 388,335.75 : x - Step 2: Convert to fraction form
660,279.48/911,402.73 = 388,335.75/x - Step 3: Cross multiply
660,279.48x = 911,402.73 × 388,335.75 - Step 4: Simplify right side
660,279.48x = 353,930,262,706.60 - Step 5: Solve for x
x = 353,930,262,706.60/660,279.48 - Step 6: Final answer
x = 536,030.99
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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.