Finding the Fourth Proportional to 756,864,381.60, 1,135,296,572.40 and 513,208,087.20
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Solution
The fourth proportional to 756,864,381.60, 1,135,296,572.40 and 513,208,087.20 is: 769,812,130.80
Step by Step Solution
- Step 1: Write the proportion equation
756,864,381.60 : 1,135,296,572.40 = 513,208,087.20 : x - Step 2: Convert to fraction form
756,864,381.60/1,135,296,572.40 = 513,208,087.20/x - Step 3: Cross multiply
756,864,381.60x = 1,135,296,572.40 × 513,208,087.20 - Step 4: Simplify right side
756,864,381.60x = 582,643,382,326,120,320 - Step 5: Solve for x
x = 582,643,382,326,120,320/756,864,381.60 - Step 6: Final answer
x = 769,812,130.80
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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.