Finding the Third Proportional to 390,437.72 and 791,742.09
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Solution
The third proportional to 390,437.72 and 791,742.09 is: 1,605,519.94
Step by Step Solution
- Step 1: Write the proportion equation
390,437.72 : 791,742.09 = 791,742.09 : x - Step 2: Convert to fraction form
390,437.72/791,742.09 = 791,742.09/x - Step 3: Cross multiply
390,437.72x = 791,742.09 × 791,742.09 - Step 4: Simplify right side
390,437.72x = 626,855,543,015.63 - Step 5: Solve for x
x = 626,855,543,015.63/390,437.72 - Step 6: Final answer
x = 1,605,519.94
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Why These Related Problems?
These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.