Finding the Fourth Proportional to 521,946,461.58, 719,617,476.29 and 427,512,720.12
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Solution
The fourth proportional to 521,946,461.58, 719,617,476.29 and 427,512,720.12 is: 589,419,887.63
Step by Step Solution
- Step 1: Write the proportion equation
521,946,461.58 : 719,617,476.29 = 427,512,720.12 : x - Step 2: Convert to fraction form
521,946,461.58/719,617,476.29 = 427,512,720.12/x - Step 3: Cross multiply
521,946,461.58x = 719,617,476.29 × 427,512,720.12 - Step 4: Simplify right side
521,946,461.58x = 307,645,624,732,489,920 - Step 5: Solve for x
x = 307,645,624,732,489,920/521,946,461.58 - Step 6: Final answer
x = 589,419,887.63
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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.