Finding the Fourth Proportional to 489,974,604.80, 734,961,907.20 and 423,461,811.20
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Solution
The fourth proportional to 489,974,604.80, 734,961,907.20 and 423,461,811.20 is: 635,192,716.80
Step by Step Solution
- Step 1: Write the proportion equation
489,974,604.80 : 734,961,907.20 = 423,461,811.20 : x - Step 2: Convert to fraction form
489,974,604.80/734,961,907.20 = 423,461,811.20/x - Step 3: Cross multiply
489,974,604.80x = 734,961,907.20 × 423,461,811.20 - Step 4: Simplify right side
489,974,604.80x = 311,228,300,385,918,336 - Step 5: Solve for x
x = 311,228,300,385,918,336/489,974,604.80 - Step 6: Final answer
x = 635,192,716.80
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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.