Finding the Fourth Proportional to 749,382.84, 1,124,001.36 and 412,312.68
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Solution
The fourth proportional to 749,382.84, 1,124,001.36 and 412,312.68 is: 618,428.91
Step by Step Solution
- Step 1: Write the proportion equation
749,382.84 : 1,124,001.36 = 412,312.68 : x - Step 2: Convert to fraction form
749,382.84/1,124,001.36 = 412,312.68/x - Step 3: Cross multiply
749,382.84x = 1,124,001.36 × 412,312.68 - Step 4: Simplify right side
749,382.84x = 463,440,013,065.25 - Step 5: Solve for x
x = 463,440,013,065.25/749,382.84 - Step 6: Final answer
x = 618,428.91
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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.