Finding the Fourth Proportional to 418,539.40, 627,809.10 and 402,209.80
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Solution
The fourth proportional to 418,539.40, 627,809.10 and 402,209.80 is: 603,314.70
Step by Step Solution
- Step 1: Write the proportion equation
418,539.40 : 627,809.10 = 402,209.80 : x - Step 2: Convert to fraction form
418,539.40/627,809.10 = 402,209.80/x - Step 3: Cross multiply
418,539.40x = 627,809.10 × 402,209.80 - Step 4: Simplify right side
418,539.40x = 252,510,972,549.18 - Step 5: Solve for x
x = 252,510,972,549.18/418,539.40 - Step 6: Final answer
x = 603,314.70
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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.