Finding the Fourth Proportional to 639,731.64, 959,929.68 and 260,930.28
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Solution
The fourth proportional to 639,731.64, 959,929.68 and 260,930.28 is: 391,530.92
Step by Step Solution
- Step 1: Write the proportion equation
639,731.64 : 959,929.68 = 260,930.28 : x - Step 2: Convert to fraction form
639,731.64/959,929.68 = 260,930.28/x - Step 3: Cross multiply
639,731.64x = 959,929.68 × 260,930.28 - Step 4: Simplify right side
639,731.64x = 250,474,720,182.71 - Step 5: Solve for x
x = 250,474,720,182.71/639,731.64 - Step 6: Final answer
x = 391,530.92
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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.