Finding the Fourth Proportional to 398,227,382.49, 549,379,448.36 and 379,764,374.70
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Solution
The fourth proportional to 398,227,382.49, 549,379,448.36 and 379,764,374.70 is: 523,908,580.51
Step by Step Solution
- Step 1: Write the proportion equation
398,227,382.49 : 549,379,448.36 = 379,764,374.70 : x - Step 2: Convert to fraction form
398,227,382.49/549,379,448.36 = 379,764,374.70/x - Step 3: Cross multiply
398,227,382.49x = 549,379,448.36 × 379,764,374.70 - Step 4: Simplify right side
398,227,382.49x = 208,634,742,678,010,048 - Step 5: Solve for x
x = 208,634,742,678,010,048/398,227,382.49 - Step 6: Final answer
x = 523,908,580.51
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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.