Finding the Fourth Proportional to 865,621.63, 1,194,520.74 and 478,417.03
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Solution
The fourth proportional to 865,621.63, 1,194,520.74 and 478,417.03 is: 660,194.99
Step by Step Solution
- Step 1: Write the proportion equation
865,621.63 : 1,194,520.74 = 478,417.03 : x - Step 2: Convert to fraction form
865,621.63/1,194,520.74 = 478,417.03/x - Step 3: Cross multiply
865,621.63x = 1,194,520.74 × 478,417.03 - Step 4: Simplify right side
865,621.63x = 571,479,063,511.96 - Step 5: Solve for x
x = 571,479,063,511.96/865,621.63 - Step 6: Final answer
x = 660,194.99
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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.