Finding the Fourth Proportional to 990,968.78, 1,367,491.16 and 561,251.99
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Solution
The fourth proportional to 990,968.78, 1,367,491.16 and 561,251.99 is: 774,501.82
Step by Step Solution
- Step 1: Write the proportion equation
990,968.78 : 1,367,491.16 = 561,251.99 : x - Step 2: Convert to fraction form
990,968.78/1,367,491.16 = 561,251.99/x - Step 3: Cross multiply
990,968.78x = 1,367,491.16 × 561,251.99 - Step 4: Simplify right side
990,968.78x = 767,507,128,830.09 - Step 5: Solve for x
x = 767,507,128,830.09/990,968.78 - Step 6: Final answer
x = 774,501.82
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.