Finding the Fourth Proportional to 709,485.19, 979,110.32 and 387,215.96
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Solution
The fourth proportional to 709,485.19, 979,110.32 and 387,215.96 is: 534,369.35
Step by Step Solution
- Step 1: Write the proportion equation
709,485.19 : 979,110.32 = 387,215.96 : x - Step 2: Convert to fraction form
709,485.19/979,110.32 = 387,215.96/x - Step 3: Cross multiply
709,485.19x = 979,110.32 × 387,215.96 - Step 4: Simplify right side
709,485.19x = 379,127,135,673.08 - Step 5: Solve for x
x = 379,127,135,673.08/709,485.19 - Step 6: Final answer
x = 534,369.35
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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.