Finding the Fourth Proportional to 720,217,580.13, 993,887,304.84 and 406,945,068.05
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Solution
The fourth proportional to 720,217,580.13, 993,887,304.84 and 406,945,068.05 is: 561,576,873.52
Step by Step Solution
- Step 1: Write the proportion equation
720,217,580.13 : 993,887,304.84 = 406,945,068.05 : x - Step 2: Convert to fraction form
720,217,580.13/993,887,304.84 = 406,945,068.05/x - Step 3: Cross multiply
720,217,580.13x = 993,887,304.84 × 406,945,068.05 - Step 4: Simplify right side
720,217,580.13x = 404,457,536,904,629,632 - Step 5: Solve for x
x = 404,457,536,904,629,632/720,217,580.13 - Step 6: Final answer
x = 561,576,873.52
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1.5x scale
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.