Finding the Fourth Proportional to 408,860,840.70, 613,291,261.05 and 190,438,589.70
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Solution
The fourth proportional to 408,860,840.70, 613,291,261.05 and 190,438,589.70 is: 285,657,884.55
Step by Step Solution
- Step 1: Write the proportion equation
408,860,840.70 : 613,291,261.05 = 190,438,589.70 : x - Step 2: Convert to fraction form
408,860,840.70/613,291,261.05 = 190,438,589.70/x - Step 3: Cross multiply
408,860,840.70x = 613,291,261.05 × 190,438,589.70 - Step 4: Simplify right side
408,860,840.70x = 116,794,322,829,696,528 - Step 5: Solve for x
x = 116,794,322,829,696,528/408,860,840.70 - Step 6: Final answer
x = 285,657,884.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.