Finding the Fourth Proportional to 418,972.46, 578,765.16 and 403,418.09
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Solution
The fourth proportional to 418,972.46, 578,765.16 and 403,418.09 is: 557,278.48
Step by Step Solution
- Step 1: Write the proportion equation
418,972.46 : 578,765.16 = 403,418.09 : x - Step 2: Convert to fraction form
418,972.46/578,765.16 = 403,418.09/x - Step 3: Cross multiply
418,972.46x = 578,765.16 × 403,418.09 - Step 4: Simplify right side
418,972.46x = 233,484,332,511.92 - Step 5: Solve for x
x = 233,484,332,511.92/418,972.46 - Step 6: Final answer
x = 557,278.48
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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.