Finding the Fourth Proportional to 478,389,626.70, 670,198,973.70 and 478,389,626.70
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Solution
The fourth proportional to 478,389,626.70, 670,198,973.70 and 478,389,626.70 is: 670,198,973.70
Step by Step Solution
- Step 1: Write the proportion equation
478,389,626.70 : 670,198,973.70 = 478,389,626.70 : x - Step 2: Convert to fraction form
478,389,626.70/670,198,973.70 = 478,389,626.70/x - Step 3: Cross multiply
478,389,626.70x = 670,198,973.70 × 478,389,626.70 - Step 4: Simplify right side
478,389,626.70x = 320,616,236,843,066,112 - Step 5: Solve for x
x = 320,616,236,843,066,112/478,389,626.70 - Step 6: Final answer
x = 670,198,973.70
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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.