Finding the Fourth Proportional to 354,519,427.73, 489,318,439.65 and 207,888,950.93
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Solution
The fourth proportional to 354,519,427.73, 489,318,439.65 and 207,888,950.93 is: 286,934,619.47
Step by Step Solution
- Step 1: Write the proportion equation
354,519,427.73 : 489,318,439.65 = 207,888,950.93 : x - Step 2: Convert to fraction form
354,519,427.73/489,318,439.65 = 207,888,950.93/x - Step 3: Cross multiply
354,519,427.73x = 489,318,439.65 × 207,888,950.93 - Step 4: Simplify right side
354,519,427.73x = 101,723,897,089,543,008 - Step 5: Solve for x
x = 101,723,897,089,543,008/354,519,427.73 - Step 6: Final answer
x = 286,934,619.47
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1.5x scale
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.