Finding the Fourth Proportional to 920,403,975.64, 1,380,799,861.52 and 298,570,652.99
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Solution
The fourth proportional to 920,403,975.64, 1,380,799,861.52 and 298,570,652.99 is: 447,918,878.25
Step by Step Solution
- Step 1: Write the proportion equation
920,403,975.64 : 1,380,799,861.52 = 298,570,652.99 : x - Step 2: Convert to fraction form
920,403,975.64/1,380,799,861.52 = 298,570,652.99/x - Step 3: Cross multiply
920,403,975.64x = 1,380,799,861.52 × 298,570,652.99 - Step 4: Simplify right side
920,403,975.64x = 412,266,316,302,528,000 - Step 5: Solve for x
x = 412,266,316,302,528,000/920,403,975.64 - Step 6: Final answer
x = 447,918,878.25
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1.5x scale
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.