Finding the Fourth Proportional to 1,228,721.80, 1,695,430.58 and 684,738.36
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Solution
The fourth proportional to 1,228,721.80, 1,695,430.58 and 684,738.36 is: 944,824.41
Step by Step Solution
- Step 1: Write the proportion equation
1,228,721.80 : 1,695,430.58 = 684,738.36 : x - Step 2: Convert to fraction form
1,228,721.80/1,695,430.58 = 684,738.36/x - Step 3: Cross multiply
1,228,721.80x = 1,695,430.58 × 684,738.36 - Step 4: Simplify right side
1,228,721.80x = 1,160,926,354,843.05 - Step 5: Solve for x
x = 1,160,926,354,843.05/1,228,721.80 - Step 6: Final answer
x = 944,824.41
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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.