Finding the Fourth Proportional to 665,078,724.81, 917,840,629.67 and 367,715,464.65
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Solution
The fourth proportional to 665,078,724.81, 917,840,629.67 and 367,715,464.65 is: 507,465,027.86
Step by Step Solution
- Step 1: Write the proportion equation
665,078,724.81 : 917,840,629.67 = 367,715,464.65 : x - Step 2: Convert to fraction form
665,078,724.81/917,840,629.67 = 367,715,464.65/x - Step 3: Cross multiply
665,078,724.81x = 917,840,629.67 × 367,715,464.65 - Step 4: Simplify right side
665,078,724.81x = 337,504,193,611,913,984 - Step 5: Solve for x
x = 337,504,193,611,913,984/665,078,724.81 - Step 6: Final answer
x = 507,465,027.86
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.