Finding the Fourth Proportional to 831,332.45, 1,147,251.54 and 487,085.99
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Solution
The fourth proportional to 831,332.45, 1,147,251.54 and 487,085.99 is: 672,186.14
Step by Step Solution
- Step 1: Write the proportion equation
831,332.45 : 1,147,251.54 = 487,085.99 : x - Step 2: Convert to fraction form
831,332.45/1,147,251.54 = 487,085.99/x - Step 3: Cross multiply
831,332.45x = 1,147,251.54 × 487,085.99 - Step 4: Simplify right side
831,332.45x = 558,810,143,968.24 - Step 5: Solve for x
x = 558,810,143,968.24/831,332.45 - Step 6: Final answer
x = 672,186.14
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1.5x scale
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.