Finding the Fourth Proportional to 422,968,655.12, 634,194,289.69 and 201,707,668.42
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Solution
The fourth proportional to 422,968,655.12, 634,194,289.69 and 201,707,668.42 is: 302,438,135.66
Step by Step Solution
- Step 1: Write the proportion equation
422,968,655.12 : 634,194,289.69 = 201,707,668.42 : x - Step 2: Convert to fraction form
422,968,655.12/634,194,289.69 = 201,707,668.42/x - Step 3: Cross multiply
422,968,655.12x = 634,194,289.69 × 201,707,668.42 - Step 4: Simplify right side
422,968,655.12x = 127,921,851,496,558,176 - Step 5: Solve for x
x = 127,921,851,496,558,176/422,968,655.12 - Step 6: Final answer
x = 302,438,135.66
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.