Finding the Fourth Proportional to 2,157,850,611.20, 3,235,358,740.80 and 846,962,811.20
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Solution
The fourth proportional to 2,157,850,611.20, 3,235,358,740.80 and 846,962,811.20 is: 1,269,887,970.99
Step by Step Solution
- Step 1: Write the proportion equation
2,157,850,611.20 : 3,235,358,740.80 = 846,962,811.20 : x - Step 2: Convert to fraction form
2,157,850,611.20/3,235,358,740.80 = 846,962,811.20/x - Step 3: Cross multiply
2,157,850,611.20x = 3,235,358,740.80 × 846,962,811.20 - Step 4: Simplify right side
2,157,850,611.20x = 2,740,228,534,348,460,544 - Step 5: Solve for x
x = 2,740,228,534,348,460,544/2,157,850,611.20 - Step 6: Final answer
x = 1,269,887,970.99
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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.