Finding the Fourth Proportional to 665,178.11, 917,946.65 and 378,698.19
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Solution
The fourth proportional to 665,178.11, 917,946.65 and 378,698.19 is: 522,603.99
Step by Step Solution
- Step 1: Write the proportion equation
665,178.11 : 917,946.65 = 378,698.19 : x - Step 2: Convert to fraction form
665,178.11/917,946.65 = 378,698.19/x - Step 3: Cross multiply
665,178.11x = 917,946.65 × 378,698.19 - Step 4: Simplify right side
665,178.11x = 347,624,734,871.56 - Step 5: Solve for x
x = 347,624,734,871.56/665,178.11 - Step 6: Final answer
x = 522,603.99
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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.