Finding the Fourth Proportional to 922,021,915.97, 1,272,394,051.36 and 498,635,568.02
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Solution
The fourth proportional to 922,021,915.97, 1,272,394,051.36 and 498,635,568.02 is: 688,119,142.89
Step by Step Solution
- Step 1: Write the proportion equation
922,021,915.97 : 1,272,394,051.36 = 498,635,568.02 : x - Step 2: Convert to fraction form
922,021,915.97/1,272,394,051.36 = 498,635,568.02/x - Step 3: Cross multiply
922,021,915.97x = 1,272,394,051.36 × 498,635,568.02 - Step 4: Simplify right side
922,021,915.97x = 634,460,930,547,097,088 - Step 5: Solve for x
x = 634,460,930,547,097,088/922,021,915.97 - Step 6: Final answer
x = 688,119,142.89
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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.