Finding the Fourth Proportional to 686,348,531.28, 1,028,661,124.34 and 371,201,997.68
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Solution
The fourth proportional to 686,348,531.28, 1,028,661,124.34 and 371,201,997.68 is: 556,336,972.96
Step by Step Solution
- Step 1: Write the proportion equation
686,348,531.28 : 1,028,661,124.34 = 371,201,997.68 : x - Step 2: Convert to fraction form
686,348,531.28/1,028,661,124.34 = 371,201,997.68/x - Step 3: Cross multiply
686,348,531.28x = 1,028,661,124.34 × 371,201,997.68 - Step 4: Simplify right side
686,348,531.28x = 381,841,064,290,762,880 - Step 5: Solve for x
x = 381,841,064,290,762,880/686,348,531.28 - Step 6: Final answer
x = 556,336,972.96
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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.