Finding the Fourth Proportional to 1,221,330.23, 1,685,637.47 and 677,640.95
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Solution
The fourth proportional to 1,221,330.23, 1,685,637.47 and 677,640.95 is: 935,256.45
Step by Step Solution
- Step 1: Write the proportion equation
1,221,330.23 : 1,685,637.47 = 677,640.95 : x - Step 2: Convert to fraction form
1,221,330.23/1,685,637.47 = 677,640.95/x - Step 3: Cross multiply
1,221,330.23x = 1,685,637.47 × 677,640.95 - Step 4: Simplify right side
1,221,330.23x = 1,142,256,973,138.19 - Step 5: Solve for x
x = 1,142,256,973,138.19/1,221,330.23 - Step 6: Final answer
x = 935,256.45
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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.