Finding the Fourth Proportional to 664,296.36, 916,413.20 and 392,181.95
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Solution
The fourth proportional to 664,296.36, 916,413.20 and 392,181.95 is: 541,024.67
Step by Step Solution
- Step 1: Write the proportion equation
664,296.36 : 916,413.20 = 392,181.95 : x - Step 2: Convert to fraction form
664,296.36/916,413.20 = 392,181.95/x - Step 3: Cross multiply
664,296.36x = 916,413.20 × 392,181.95 - Step 4: Simplify right side
664,296.36x = 359,400,715,781.74 - Step 5: Solve for x
x = 359,400,715,781.74/664,296.36 - Step 6: Final answer
x = 541,024.67
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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.