Finding the Fourth Proportional to 3,432,221,467.20, 5,148,380,032.11 and 978,558,370.20
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Solution
The fourth proportional to 3,432,221,467.20, 5,148,380,032.11 and 978,558,370.20 is: 1,467,851,192.45
Step by Step Solution
- Step 1: Write the proportion equation
3,432,221,467.20 : 5,148,380,032.11 = 978,558,370.20 : x - Step 2: Convert to fraction form
3,432,221,467.20/5,148,380,032.11 = 978,558,370.20/x - Step 3: Cross multiply
3,432,221,467.20x = 5,148,380,032.11 × 978,558,370.20 - Step 4: Simplify right side
3,432,221,467.20x = 5,037,990,373,391,784,960 - Step 5: Solve for x
x = 5,037,990,373,391,784,960/3,432,221,467.20 - Step 6: Final answer
x = 1,467,851,192.45
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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.