Finding the Fourth Proportional to 2,972,254,137.80, 4,458,381,206.70 and 901,972,578.20
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Solution
The fourth proportional to 2,972,254,137.80, 4,458,381,206.70 and 901,972,578.20 is: 1,352,958,867.30
Step by Step Solution
- Step 1: Write the proportion equation
2,972,254,137.80 : 4,458,381,206.70 = 901,972,578.20 : x - Step 2: Convert to fraction form
2,972,254,137.80/4,458,381,206.70 = 901,972,578.20/x - Step 3: Cross multiply
2,972,254,137.80x = 4,458,381,206.70 × 901,972,578.20 - Step 4: Simplify right side
2,972,254,137.80x = 4,021,337,591,605,626,368 - Step 5: Solve for x
x = 4,021,337,591,605,626,368/2,972,254,137.80 - Step 6: Final answer
x = 1,352,958,867.30
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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.