Finding the Fourth Proportional to 664,417,837.16, 910,237,207.21 and 639,576,984.68
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Solution
The fourth proportional to 664,417,837.16, 910,237,207.21 and 639,576,984.68 is: 876,205,808.71
Step by Step Solution
- Step 1: Write the proportion equation
664,417,837.16 : 910,237,207.21 = 639,576,984.68 : x - Step 2: Convert to fraction form
664,417,837.16/910,237,207.21 = 639,576,984.68/x - Step 3: Cross multiply
664,417,837.16x = 910,237,207.21 × 639,576,984.68 - Step 4: Simplify right side
664,417,837.16x = 582,166,768,330,916,096 - Step 5: Solve for x
x = 582,166,768,330,916,096/664,417,837.16 - Step 6: Final answer
x = 876,205,808.71
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.