Finding the Fourth Proportional to 613,291,355.80, 919,937,033.70 and 285,657,979.30
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Solution
The fourth proportional to 613,291,355.80, 919,937,033.70 and 285,657,979.30 is: 428,486,968.95
Step by Step Solution
- Step 1: Write the proportion equation
613,291,355.80 : 919,937,033.70 = 285,657,979.30 : x - Step 2: Convert to fraction form
613,291,355.80/919,937,033.70 = 285,657,979.30/x - Step 3: Cross multiply
613,291,355.80x = 919,937,033.70 × 285,657,979.30 - Step 4: Simplify right side
613,291,355.80x = 262,787,354,129,978,016 - Step 5: Solve for x
x = 262,787,354,129,978,016/613,291,355.80 - Step 6: Final answer
x = 428,486,968.95
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1.5x scale
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.