Finding the Fourth Proportional to 1,240,808.84, 1,711,880.16 and 811,340.36
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Solution
The fourth proportional to 1,240,808.84, 1,711,880.16 and 811,340.36 is: 1,119,364.58
Step by Step Solution
- Step 1: Write the proportion equation
1,240,808.84 : 1,711,880.16 = 811,340.36 : x - Step 2: Convert to fraction form
1,240,808.84/1,711,880.16 = 811,340.36/x - Step 3: Cross multiply
1,240,808.84x = 1,711,880.16 × 811,340.36 - Step 4: Simplify right side
1,240,808.84x = 1,388,917,465,291.26 - Step 5: Solve for x
x = 1,388,917,465,291.26/1,240,808.84 - Step 6: Final answer
x = 1,119,364.58
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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.