Finding the Fourth Proportional to 678,368.90, 1,018,136.55 and 299,872.10
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Solution
The fourth proportional to 678,368.90, 1,018,136.55 and 299,872.10 is: 450,065.95
Step by Step Solution
- Step 1: Write the proportion equation
678,368.90 : 1,018,136.55 = 299,872.10 : x - Step 2: Convert to fraction form
678,368.90/1,018,136.55 = 299,872.10/x - Step 3: Cross multiply
678,368.90x = 1,018,136.55 × 299,872.10 - Step 4: Simplify right side
678,368.90x = 305,310,745,335.26 - Step 5: Solve for x
x = 305,310,745,335.26/678,368.90 - Step 6: Final answer
x = 450,065.95
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.