Finding the Fourth Proportional to 638,842,245.12, 881,604,954.18 and 345,486,813.12
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Solution
The fourth proportional to 638,842,245.12, 881,604,954.18 and 345,486,813.12 is: 476,773,238.43
Step by Step Solution
- Step 1: Write the proportion equation
638,842,245.12 : 881,604,954.18 = 345,486,813.12 : x - Step 2: Convert to fraction form
638,842,245.12/881,604,954.18 = 345,486,813.12/x - Step 3: Cross multiply
638,842,245.12x = 881,604,954.18 × 345,486,813.12 - Step 4: Simplify right side
638,842,245.12x = 304,582,886,050,451,840 - Step 5: Solve for x
x = 304,582,886,050,451,840/638,842,245.12 - Step 6: Final answer
x = 476,773,238.43
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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.