Finding the Fourth Proportional to 620,273,229.70, 930,409,844.55 and 390,690,717.70
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Solution
The fourth proportional to 620,273,229.70, 930,409,844.55 and 390,690,717.70 is: 586,036,076.55
Step by Step Solution
- Step 1: Write the proportion equation
620,273,229.70 : 930,409,844.55 = 390,690,717.70 : x - Step 2: Convert to fraction form
620,273,229.70/930,409,844.55 = 390,690,717.70/x - Step 3: Cross multiply
620,273,229.70x = 930,409,844.55 × 390,690,717.70 - Step 4: Simplify right side
620,273,229.70x = 363,502,489,922,384,896 - Step 5: Solve for x
x = 363,502,489,922,384,896/620,273,229.70 - Step 6: Final answer
x = 586,036,076.55
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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.