Finding the Fourth Proportional to 1,225,182.22, 1,690,503.69 and 715,786.18
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Solution
The fourth proportional to 1,225,182.22, 1,690,503.69 and 715,786.18 is: 987,640.17
Step by Step Solution
- Step 1: Write the proportion equation
1,225,182.22 : 1,690,503.69 = 715,786.18 : x - Step 2: Convert to fraction form
1,225,182.22/1,690,503.69 = 715,786.18/x - Step 3: Cross multiply
1,225,182.22x = 1,690,503.69 × 715,786.18 - Step 4: Simplify right side
1,225,182.22x = 1,210,039,178,541.00 - Step 5: Solve for x
x = 1,210,039,178,541.00/1,225,182.22 - Step 6: Final answer
x = 987,640.17
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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.