Finding the Fourth Proportional to 1,209,612.80, 1,811,794.80 and 999,660.80
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Solution
The fourth proportional to 1,209,612.80, 1,811,794.80 and 999,660.80 is: 1,497,322.32
Step by Step Solution
- Step 1: Write the proportion equation
1,209,612.80 : 1,811,794.80 = 999,660.80 : x - Step 2: Convert to fraction form
1,209,612.80/1,811,794.80 = 999,660.80/x - Step 3: Cross multiply
1,209,612.80x = 1,811,794.80 × 999,660.80 - Step 4: Simplify right side
1,209,612.80x = 1,811,180,239,203.84 - Step 5: Solve for x
x = 1,811,180,239,203.84/1,209,612.80 - Step 6: Final answer
x = 1,497,322.32
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.