Finding the Fourth Proportional to 621,081,974.20, 930,831,704.70 and 330,088,502.20
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Solution
The fourth proportional to 621,081,974.20, 930,831,704.70 and 330,088,502.20 is: 494,712,221.52
Step by Step Solution
- Step 1: Write the proportion equation
621,081,974.20 : 930,831,704.70 = 330,088,502.20 : x - Step 2: Convert to fraction form
621,081,974.20/930,831,704.70 = 330,088,502.20/x - Step 3: Cross multiply
621,081,974.20x = 930,831,704.70 × 330,088,502.20 - Step 4: Simplify right side
621,081,974.20x = 307,256,843,204,695,680 - Step 5: Solve for x
x = 307,256,843,204,695,680/621,081,974.20 - Step 6: Final answer
x = 494,712,221.52
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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.