Finding the Fourth Proportional to 983,329,998.80, 1,474,994,998.20 and 937,980,366.80
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Solution
The fourth proportional to 983,329,998.80, 1,474,994,998.20 and 937,980,366.80 is: 1,406,970,550.20
Step by Step Solution
- Step 1: Write the proportion equation
983,329,998.80 : 1,474,994,998.20 = 937,980,366.80 : x - Step 2: Convert to fraction form
983,329,998.80/1,474,994,998.20 = 937,980,366.80/x - Step 3: Cross multiply
983,329,998.80x = 1,474,994,998.20 × 937,980,366.80 - Step 4: Simplify right side
983,329,998.80x = 1,383,516,349,439,801,344 - Step 5: Solve for x
x = 1,383,516,349,439,801,344/983,329,998.80 - Step 6: Final answer
x = 1,406,970,550.20
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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.