Finding the Fourth Proportional to 812,976.05, 1,121,862.76 and 450,378.28
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Solution
The fourth proportional to 812,976.05, 1,121,862.76 and 450,378.28 is: 621,497.55
Step by Step Solution
- Step 1: Write the proportion equation
812,976.05 : 1,121,862.76 = 450,378.28 : x - Step 2: Convert to fraction form
812,976.05/1,121,862.76 = 450,378.28/x - Step 3: Cross multiply
812,976.05x = 1,121,862.76 × 450,378.28 - Step 4: Simplify right side
812,976.05x = 505,262,616,314.25 - Step 5: Solve for x
x = 505,262,616,314.25/812,976.05 - Step 6: Final answer
x = 621,497.55
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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.