Finding the Fourth Proportional to 810,119,884.25, 1,118,145,290.53 and 492,512,642.75
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Solution
The fourth proportional to 810,119,884.25, 1,118,145,290.53 and 492,512,642.75 is: 679,776,787.02
Step by Step Solution
- Step 1: Write the proportion equation
810,119,884.25 : 1,118,145,290.53 = 492,512,642.75 : x - Step 2: Convert to fraction form
810,119,884.25/1,118,145,290.53 = 492,512,642.75/x - Step 3: Cross multiply
810,119,884.25x = 1,118,145,290.53 × 492,512,642.75 - Step 4: Simplify right side
810,119,884.25x = 550,700,692,017,396,864 - Step 5: Solve for x
x = 550,700,692,017,396,864/810,119,884.25 - Step 6: Final answer
x = 679,776,787.02
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Double scale
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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.