Finding the Fourth Proportional to 553,207.68, 763,387.20 and 311,503.68
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Solution
The fourth proportional to 553,207.68, 763,387.20 and 311,503.68 is: 429,852.89
Step by Step Solution
- Step 1: Write the proportion equation
553,207.68 : 763,387.20 = 311,503.68 : x - Step 2: Convert to fraction form
553,207.68/763,387.20 = 311,503.68/x - Step 3: Cross multiply
553,207.68x = 763,387.20 × 311,503.68 - Step 4: Simplify right side
553,207.68x = 237,797,922,064.90 - Step 5: Solve for x
x = 237,797,922,064.90/553,207.68 - Step 6: Final answer
x = 429,852.89
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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.