Finding the Fourth Proportional to 8,428,386,872.56, 11,631,888,140.88 and 4,670,376,242.80
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Solution
The fourth proportional to 8,428,386,872.56, 11,631,888,140.88 and 4,670,376,242.80 is: 6,445,515,002.28
Step by Step Solution
- Step 1: Write the proportion equation
8,428,386,872.56 : 11,631,888,140.88 = 4,670,376,242.80 : x - Step 2: Convert to fraction form
8,428,386,872.56/11,631,888,140.88 = 4,670,376,242.80/x - Step 3: Cross multiply
8,428,386,872.56x = 11,631,888,140.88 × 4,670,376,242.80 - Step 4: Simplify right side
8,428,386,872.56x = 54,325,294,032,073,007,104 - Step 5: Solve for x
x = 54,325,294,032,073,007,104/8,428,386,872.56 - Step 6: Final answer
x = 6,445,515,002.28
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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.