Finding the Fourth Proportional to 766,415,492.21, 1,057,653,842.61 and 413,991,638.63
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Solution
The fourth proportional to 766,415,492.21, 1,057,653,842.61 and 413,991,638.63 is: 571,308,711.60
Step by Step Solution
- Step 1: Write the proportion equation
766,415,492.21 : 1,057,653,842.61 = 413,991,638.63 : x - Step 2: Convert to fraction form
766,415,492.21/1,057,653,842.61 = 413,991,638.63/x - Step 3: Cross multiply
766,415,492.21x = 1,057,653,842.61 × 413,991,638.63 - Step 4: Simplify right side
766,415,492.21x = 437,859,847,405,430,016 - Step 5: Solve for x
x = 437,859,847,405,430,016/766,415,492.21 - Step 6: Final answer
x = 571,308,711.60
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.