Finding the Fourth Proportional to 818,901,246.80, 1,228,351,870.20 and 543,402,232.40
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Solution
The fourth proportional to 818,901,246.80, 1,228,351,870.20 and 543,402,232.40 is: 815,103,348.60
Step by Step Solution
- Step 1: Write the proportion equation
818,901,246.80 : 1,228,351,870.20 = 543,402,232.40 : x - Step 2: Convert to fraction form
818,901,246.80/1,228,351,870.20 = 543,402,232.40/x - Step 3: Cross multiply
818,901,246.80x = 1,228,351,870.20 × 543,402,232.40 - Step 4: Simplify right side
818,901,246.80x = 667,489,148,439,395,072 - Step 5: Solve for x
x = 667,489,148,439,395,072/818,901,246.80 - Step 6: Final answer
x = 815,103,348.60
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1.5x scale
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.