Finding the Fourth Proportional to 887,816,486.70, 1,331,724,730.05 and 862,307,318.70
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Solution
The fourth proportional to 887,816,486.70, 1,331,724,730.05 and 862,307,318.70 is: 1,293,460,978.05
Step by Step Solution
- Step 1: Write the proportion equation
887,816,486.70 : 1,331,724,730.05 = 862,307,318.70 : x - Step 2: Convert to fraction form
887,816,486.70/1,331,724,730.05 = 862,307,318.70/x - Step 3: Cross multiply
887,816,486.70x = 1,331,724,730.05 × 862,307,318.70 - Step 4: Simplify right side
887,816,486.70x = 1,148,355,981,215,896,832 - Step 5: Solve for x
x = 1,148,355,981,215,896,832/887,816,486.70 - Step 6: Final answer
x = 1,293,460,978.05
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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.