Finding the Fourth Proportional to 645,157.21, 890,219.27 and 369,472.19
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Solution
The fourth proportional to 645,157.21, 890,219.27 and 369,472.19 is: 509,815.69
Step by Step Solution
- Step 1: Write the proportion equation
645,157.21 : 890,219.27 = 369,472.19 : x - Step 2: Convert to fraction form
645,157.21/890,219.27 = 369,472.19/x - Step 3: Cross multiply
645,157.21x = 890,219.27 × 369,472.19 - Step 4: Simplify right side
645,157.21x = 328,911,263,267.10 - Step 5: Solve for x
x = 328,911,263,267.10/645,157.21 - Step 6: Final answer
x = 509,815.69
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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.