Finding the Fourth Proportional to 318,860,991.60, 478,291,487.40 and 291,651,212.40
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Solution
The fourth proportional to 318,860,991.60, 478,291,487.40 and 291,651,212.40 is: 437,476,818.60
Step by Step Solution
- Step 1: Write the proportion equation
318,860,991.60 : 478,291,487.40 = 291,651,212.40 : x - Step 2: Convert to fraction form
318,860,991.60/478,291,487.40 = 291,651,212.40/x - Step 3: Cross multiply
318,860,991.60x = 478,291,487.40 × 291,651,212.40 - Step 4: Simplify right side
318,860,991.60x = 139,494,292,180,809,312 - Step 5: Solve for x
x = 139,494,292,180,809,312/318,860,991.60 - Step 6: Final answer
x = 437,476,818.60
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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.