Finding the Fourth Proportional to 629,613,965.76, 868,868,432.16 and 351,173,436.48
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Solution
The fourth proportional to 629,613,965.76, 868,868,432.16 and 351,173,436.48 is: 484,619,989.02
Step by Step Solution
- Step 1: Write the proportion equation
629,613,965.76 : 868,868,432.16 = 351,173,436.48 : x - Step 2: Convert to fraction form
629,613,965.76/868,868,432.16 = 351,173,436.48/x - Step 3: Cross multiply
629,613,965.76x = 868,868,432.16 × 351,173,436.48 - Step 4: Simplify right side
629,613,965.76x = 305,123,513,170,616,960 - Step 5: Solve for x
x = 305,123,513,170,616,960/629,613,965.76 - Step 6: Final answer
x = 484,619,989.02
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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.