Finding the Fourth Proportional to 649,981,306.02, 896,975,940.87 and 352,623,548.19
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Solution
The fourth proportional to 649,981,306.02, 896,975,940.87 and 352,623,548.19 is: 486,621,439.70
Step by Step Solution
- Step 1: Write the proportion equation
649,981,306.02 : 896,975,940.87 = 352,623,548.19 : x - Step 2: Convert to fraction form
649,981,306.02/896,975,940.87 = 352,623,548.19/x - Step 3: Cross multiply
649,981,306.02x = 896,975,940.87 × 352,623,548.19 - Step 4: Simplify right side
649,981,306.02x = 316,294,838,910,643,008 - Step 5: Solve for x
x = 316,294,838,910,643,008/649,981,306.02 - Step 6: Final answer
x = 486,621,439.70
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Double scale
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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.