Finding the Fourth Proportional to 1,029,505,419.12, 1,544,244,650.28 and 253,157,781.36
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Solution
The fourth proportional to 1,029,505,419.12, 1,544,244,650.28 and 253,157,781.36 is: 379,733,357.67
Step by Step Solution
- Step 1: Write the proportion equation
1,029,505,419.12 : 1,544,244,650.28 = 253,157,781.36 : x - Step 2: Convert to fraction form
1,029,505,419.12/1,544,244,650.28 = 253,157,781.36/x - Step 3: Cross multiply
1,029,505,419.12x = 1,544,244,650.28 × 253,157,781.36 - Step 4: Simplify right side
1,029,505,419.12x = 390,937,549,541,933,888 - Step 5: Solve for x
x = 390,937,549,541,933,888/1,029,505,419.12 - Step 6: Final answer
x = 379,733,357.67
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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.