Finding the Fourth Proportional to 917,486.70, 1,376,230.05 and 386,045.70
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Solution
The fourth proportional to 917,486.70, 1,376,230.05 and 386,045.70 is: 579,068.55
Step by Step Solution
- Step 1: Write the proportion equation
917,486.70 : 1,376,230.05 = 386,045.70 : x - Step 2: Convert to fraction form
917,486.70/1,376,230.05 = 386,045.70/x - Step 3: Cross multiply
917,486.70x = 1,376,230.05 × 386,045.70 - Step 4: Simplify right side
917,486.70x = 531,287,693,013.29 - Step 5: Solve for x
x = 531,287,693,013.29/917,486.70 - Step 6: Final answer
x = 579,068.55
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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.