Finding the Fourth Proportional to 408,070,778.70, 572,508,413.70 and 408,070,778.70
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Solution
The fourth proportional to 408,070,778.70, 572,508,413.70 and 408,070,778.70 is: 572,508,413.70
Step by Step Solution
- Step 1: Write the proportion equation
408,070,778.70 : 572,508,413.70 = 408,070,778.70 : x - Step 2: Convert to fraction form
408,070,778.70/572,508,413.70 = 408,070,778.70/x - Step 3: Cross multiply
408,070,778.70x = 572,508,413.70 × 408,070,778.70 - Step 4: Simplify right side
408,070,778.70x = 233,623,954,190,860,768 - Step 5: Solve for x
x = 233,623,954,190,860,768/408,070,778.70 - Step 6: Final answer
x = 572,508,413.70
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.