Finding the Fourth Proportional to 498,226,995.21, 687,574,141.38 and 286,533,991.09
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Solution
The fourth proportional to 498,226,995.21, 687,574,141.38 and 286,533,991.09 is: 395,428,920.54
Step by Step Solution
- Step 1: Write the proportion equation
498,226,995.21 : 687,574,141.38 = 286,533,991.09 : x - Step 2: Convert to fraction form
498,226,995.21/687,574,141.38 = 286,533,991.09/x - Step 3: Cross multiply
498,226,995.21x = 687,574,141.38 × 286,533,991.09 - Step 4: Simplify right side
498,226,995.21x = 197,013,362,899,891,296 - Step 5: Solve for x
x = 197,013,362,899,891,296/498,226,995.21 - Step 6: Final answer
x = 395,428,920.54
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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.