Finding the Fourth Proportional to 649,981,247.51, 896,975,860.14 and 352,623,489.68
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Solution
The fourth proportional to 649,981,247.51, 896,975,860.14 and 352,623,489.68 is: 486,621,358.96
Step by Step Solution
- Step 1: Write the proportion equation
649,981,247.51 : 896,975,860.14 = 352,623,489.68 : x - Step 2: Convert to fraction form
649,981,247.51/896,975,860.14 = 352,623,489.68/x - Step 3: Cross multiply
649,981,247.51x = 896,975,860.14 × 352,623,489.68 - Step 4: Simplify right side
649,981,247.51x = 316,294,757,956,801,536 - Step 5: Solve for x
x = 316,294,757,956,801,536/649,981,247.51 - Step 6: Final answer
x = 486,621,358.96
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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.