Finding the Fourth Proportional to 613,467,475.80, 920,201,213.70 and 354,549,420.60
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Solution
The fourth proportional to 613,467,475.80, 920,201,213.70 and 354,549,420.60 is: 531,824,130.90
Step by Step Solution
- Step 1: Write the proportion equation
613,467,475.80 : 920,201,213.70 = 354,549,420.60 : x - Step 2: Convert to fraction form
613,467,475.80/920,201,213.70 = 354,549,420.60/x - Step 3: Cross multiply
613,467,475.80x = 920,201,213.70 × 354,549,420.60 - Step 4: Simplify right side
613,467,475.80x = 326,256,807,152,751,808 - Step 5: Solve for x
x = 326,256,807,152,751,808/613,467,475.80 - Step 6: Final answer
x = 531,824,130.90
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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.