Finding the Fourth Proportional to 664,417,836.66, 910,237,206.53 and 639,576,984.18
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Solution
The fourth proportional to 664,417,836.66, 910,237,206.53 and 639,576,984.18 is: 876,205,808.03
Step by Step Solution
- Step 1: Write the proportion equation
664,417,836.66 : 910,237,206.53 = 639,576,984.18 : x - Step 2: Convert to fraction form
664,417,836.66/910,237,206.53 = 639,576,984.18/x - Step 3: Cross multiply
664,417,836.66x = 910,237,206.53 × 639,576,984.18 - Step 4: Simplify right side
664,417,836.66x = 582,166,767,437,687,296 - Step 5: Solve for x
x = 582,166,767,437,687,296/664,417,836.66 - Step 6: Final answer
x = 876,205,808.03
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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.