Finding the Fourth Proportional to 553,221.18, 763,405.83 and 311,517.18
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Solution
The fourth proportional to 553,221.18, 763,405.83 and 311,517.18 is: 429,871.52
Step by Step Solution
- Step 1: Write the proportion equation
553,221.18 : 763,405.83 = 311,517.18 : x - Step 2: Convert to fraction form
553,221.18/763,405.83 = 311,517.18/x - Step 3: Cross multiply
553,221.18x = 763,405.83 × 311,517.18 - Step 4: Simplify right side
553,221.18x = 237,814,031,357.16 - Step 5: Solve for x
x = 237,814,031,357.16/553,221.18 - Step 6: Final answer
x = 429,871.52
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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.