Finding the Fourth Proportional to 695,986.02, 960,537.69 and 390,112.20
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Solution
The fourth proportional to 695,986.02, 960,537.69 and 390,112.20 is: 538,397.99
Step by Step Solution
- Step 1: Write the proportion equation
695,986.02 : 960,537.69 = 390,112.20 : x - Step 2: Convert to fraction form
695,986.02/960,537.69 = 390,112.20/x - Step 3: Cross multiply
695,986.02x = 960,537.69 × 390,112.20 - Step 4: Simplify right side
695,986.02x = 374,717,471,428.82 - Step 5: Solve for x
x = 374,717,471,428.82/695,986.02 - Step 6: Final answer
x = 538,397.99
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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.