Finding the Fourth Proportional to 709,477.19, 979,099.28 and 387,207.96
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Solution
The fourth proportional to 709,477.19, 979,099.28 and 387,207.96 is: 534,358.31
Step by Step Solution
- Step 1: Write the proportion equation
709,477.19 : 979,099.28 = 387,207.96 : x - Step 2: Convert to fraction form
709,477.19/979,099.28 = 387,207.96/x - Step 3: Cross multiply
709,477.19x = 979,099.28 × 387,207.96 - Step 4: Simplify right side
709,477.19x = 379,115,034,846.27 - Step 5: Solve for x
x = 379,115,034,846.27/709,477.19 - Step 6: Final answer
x = 534,358.31
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.