Finding the Fourth Proportional to 411,741,071.20, 618,089,903.70 and 248,163,531.40
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Solution
The fourth proportional to 411,741,071.20, 618,089,903.70 and 248,163,531.40 is: 372,533,574.99
Step by Step Solution
- Step 1: Write the proportion equation
411,741,071.20 : 618,089,903.70 = 248,163,531.40 : x - Step 2: Convert to fraction form
411,741,071.20/618,089,903.70 = 248,163,531.40/x - Step 3: Cross multiply
411,741,071.20x = 618,089,903.70 × 248,163,531.40 - Step 4: Simplify right side
411,741,071.20x = 153,387,373,224,877,952 - Step 5: Solve for x
x = 153,387,373,224,877,952/411,741,071.20 - Step 6: Final answer
x = 372,533,574.99
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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.