Finding the Fourth Proportional to 478,797,617.55, 660,740,413.68 and 258,781,043.55
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Solution
The fourth proportional to 478,797,617.55, 660,740,413.68 and 258,781,043.55 is: 357,117,678.74
Step by Step Solution
- Step 1: Write the proportion equation
478,797,617.55 : 660,740,413.68 = 258,781,043.55 : x - Step 2: Convert to fraction form
478,797,617.55/660,740,413.68 = 258,781,043.55/x - Step 3: Cross multiply
478,797,617.55x = 660,740,413.68 × 258,781,043.55 - Step 4: Simplify right side
478,797,617.55x = 170,987,093,767,769,088 - Step 5: Solve for x
x = 170,987,093,767,769,088/478,797,617.55 - Step 6: Final answer
x = 357,117,678.74
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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.