Finding the Fourth Proportional to 777,299.52, 1,072,749.84 and 454,990.08
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Solution
The fourth proportional to 777,299.52, 1,072,749.84 and 454,990.08 is: 627,931.09
Step by Step Solution
- Step 1: Write the proportion equation
777,299.52 : 1,072,749.84 = 454,990.08 : x - Step 2: Convert to fraction form
777,299.52/1,072,749.84 = 454,990.08/x - Step 3: Cross multiply
777,299.52x = 1,072,749.84 × 454,990.08 - Step 4: Simplify right side
777,299.52x = 488,090,535,521.59 - Step 5: Solve for x
x = 488,090,535,521.59/777,299.52 - Step 6: Final answer
x = 627,931.09
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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.