Finding the Fourth Proportional to 1,115,904.63, 1,540,230.86 and 686,569.20
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Solution
The fourth proportional to 1,115,904.63, 1,540,230.86 and 686,569.20 is: 947,639.28
Step by Step Solution
- Step 1: Write the proportion equation
1,115,904.63 : 1,540,230.86 = 686,569.20 : x - Step 2: Convert to fraction form
1,115,904.63/1,540,230.86 = 686,569.20/x - Step 3: Cross multiply
1,115,904.63x = 1,540,230.86 × 686,569.20 - Step 4: Simplify right side
1,115,904.63x = 1,057,475,065,306.07 - Step 5: Solve for x
x = 1,057,475,065,306.07/1,115,904.63 - Step 6: Final answer
x = 947,639.28
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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.