Finding the Fourth Proportional to 449,988,569.98, 621,008,348.23 and 251,738,241.05
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Solution
The fourth proportional to 449,988,569.98, 621,008,348.23 and 251,738,241.05 is: 347,412,267.09
Step by Step Solution
- Step 1: Write the proportion equation
449,988,569.98 : 621,008,348.23 = 251,738,241.05 : x - Step 2: Convert to fraction form
449,988,569.98/621,008,348.23 = 251,738,241.05/x - Step 3: Cross multiply
449,988,569.98x = 621,008,348.23 × 251,738,241.05 - Step 4: Simplify right side
449,988,569.98x = 156,331,549,262,653,280 - Step 5: Solve for x
x = 156,331,549,262,653,280/449,988,569.98 - Step 6: Final answer
x = 347,412,267.09
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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.