Finding the Fourth Proportional to 1,385,943.36, 1,912,625.28 and 774,149.76
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Solution
The fourth proportional to 1,385,943.36, 1,912,625.28 and 774,149.76 is: 1,068,339.76
Step by Step Solution
- Step 1: Write the proportion equation
1,385,943.36 : 1,912,625.28 = 774,149.76 : x - Step 2: Convert to fraction form
1,385,943.36/1,912,625.28 = 774,149.76/x - Step 3: Cross multiply
1,385,943.36x = 1,912,625.28 × 774,149.76 - Step 4: Simplify right side
1,385,943.36x = 1,480,658,401,481.93 - Step 5: Solve for x
x = 1,480,658,401,481.93/1,385,943.36 - Step 6: Final answer
x = 1,068,339.76
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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.