Finding the Fourth Proportional to 993,449,998.80, 1,490,174,998.20 and 977,325,685.20
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Solution
The fourth proportional to 993,449,998.80, 1,490,174,998.20 and 977,325,685.20 is: 1,465,988,527.80
Step by Step Solution
- Step 1: Write the proportion equation
993,449,998.80 : 1,490,174,998.20 = 977,325,685.20 : x - Step 2: Convert to fraction form
993,449,998.80/1,490,174,998.20 = 977,325,685.20/x - Step 3: Cross multiply
993,449,998.80x = 1,490,174,998.20 × 977,325,685.20 - Step 4: Simplify right side
993,449,998.80x = 1,456,386,301,183,723,776 - Step 5: Solve for x
x = 1,456,386,301,183,723,776/993,449,998.80 - Step 6: Final answer
x = 1,465,988,527.80
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Double scale
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Similar ratio
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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.