Finding the Fourth Proportional to 903,108,666,191.35, 1,246,322,847,331.10 and 491,557,261,665.15
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Solution
The fourth proportional to 903,108,666,191.35, 1,246,322,847,331.10 and 491,557,261,665.15 is: 678,366,921,854.99
Step by Step Solution
- Step 1: Write the proportion equation
903,108,666,191.35 : 1,246,322,847,331.10 = 491,557,261,665.15 : x - Step 2: Convert to fraction form
903,108,666,191.35/1,246,322,847,331.10 = 491,557,261,665.15/x - Step 3: Cross multiply
903,108,666,191.35x = 1,246,322,847,331.10 × 491,557,261,665.15 - Step 4: Simplify right side
903,108,666,191.35x = 612,639,045,984,788,353,646,592 - Step 5: Solve for x
x = 612,639,045,984,788,353,646,592/903,108,666,191.35 - Step 6: Final answer
x = 678,366,921,854.99
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Double scale
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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.