Finding the Fourth Proportional to 664,417,836.16, 910,237,205.84 and 639,576,983.68
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Solution
The fourth proportional to 664,417,836.16, 910,237,205.84 and 639,576,983.68 is: 876,205,807.34
Step by Step Solution
- Step 1: Write the proportion equation
664,417,836.16 : 910,237,205.84 = 639,576,983.68 : x - Step 2: Convert to fraction form
664,417,836.16/910,237,205.84 = 639,576,983.68/x - Step 3: Cross multiply
664,417,836.16x = 910,237,205.84 × 639,576,983.68 - Step 4: Simplify right side
664,417,836.16x = 582,166,766,544,458,496 - Step 5: Solve for x
x = 582,166,766,544,458,496/664,417,836.16 - Step 6: Final answer
x = 876,205,807.34
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1.5x scale
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.