Finding the Fourth Proportional to 728,918.84, 1,005,905.21 and 406,628.68
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Solution
The fourth proportional to 728,918.84, 1,005,905.21 and 406,628.68 is: 561,146.02
Step by Step Solution
- Step 1: Write the proportion equation
728,918.84 : 1,005,905.21 = 406,628.68 : x - Step 2: Convert to fraction form
728,918.84/1,005,905.21 = 406,628.68/x - Step 3: Cross multiply
728,918.84x = 1,005,905.21 × 406,628.68 - Step 4: Simplify right side
728,918.84x = 409,029,907,747.42 - Step 5: Solve for x
x = 409,029,907,747.42/728,918.84 - Step 6: Final answer
x = 561,146.02
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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.