Finding the Fourth Proportional to 831,670.14, 1,147,719.74 and 487,754.12
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Solution
The fourth proportional to 831,670.14, 1,147,719.74 and 487,754.12 is: 673,109.45
Step by Step Solution
- Step 1: Write the proportion equation
831,670.14 : 1,147,719.74 = 487,754.12 : x - Step 2: Convert to fraction form
831,670.14/1,147,719.74 = 487,754.12/x - Step 3: Cross multiply
831,670.14x = 1,147,719.74 × 487,754.12 - Step 4: Simplify right side
831,670.14x = 559,805,031,790.33 - Step 5: Solve for x
x = 559,805,031,790.33/831,670.14 - Step 6: Final answer
x = 673,109.45
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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.