Finding the Fourth Proportional to 629,613,915.93, 868,868,363.39 and 351,173,386.53
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Solution
The fourth proportional to 629,613,915.93, 868,868,363.39 and 351,173,386.53 is: 484,619,920.08
Step by Step Solution
- Step 1: Write the proportion equation
629,613,915.93 : 868,868,363.39 = 351,173,386.53 : x - Step 2: Convert to fraction form
629,613,915.93/868,868,363.39 = 351,173,386.53/x - Step 3: Cross multiply
629,613,915.93x = 868,868,363.39 × 351,173,386.53 - Step 4: Simplify right side
629,613,915.93x = 305,123,445,618,689,088 - Step 5: Solve for x
x = 305,123,445,618,689,088/629,613,915.93 - Step 6: Final answer
x = 484,619,920.08
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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.