Finding the Fourth Proportional to 1,385,983.62, 1,912,637.19 and 774,145.08
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Solution
The fourth proportional to 1,385,983.62, 1,912,637.19 and 774,145.08 is: 1,068,308.92
Step by Step Solution
- Step 1: Write the proportion equation
1,385,983.62 : 1,912,637.19 = 774,145.08 : x - Step 2: Convert to fraction form
1,385,983.62/1,912,637.19 = 774,145.08/x - Step 3: Cross multiply
1,385,983.62x = 1,912,637.19 × 774,145.08 - Step 4: Simplify right side
1,385,983.62x = 1,480,658,670,463.53 - Step 5: Solve for x
x = 1,480,658,670,463.53/1,385,983.62 - Step 6: Final answer
x = 1,068,308.92
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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.