Finding the Fourth Proportional to 420,718.60, 584,511.05 and 415,674.07
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Solution
The fourth proportional to 420,718.60, 584,511.05 and 415,674.07 is: 577,502.60
Step by Step Solution
- Step 1: Write the proportion equation
420,718.60 : 584,511.05 = 415,674.07 : x - Step 2: Convert to fraction form
420,718.60/584,511.05 = 415,674.07/x - Step 3: Cross multiply
420,718.60x = 584,511.05 × 415,674.07 - Step 4: Simplify right side
420,718.60x = 242,966,084,190.92 - Step 5: Solve for x
x = 242,966,084,190.92/420,718.60 - Step 6: Final answer
x = 577,502.60
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Why These Related Problems?
These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.