Finding the Fourth Proportional to 639,726.80, 959,935.80 and 265,787.60
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Solution
The fourth proportional to 639,726.80, 959,935.80 and 265,787.60 is: 398,824.99
Step by Step Solution
- Step 1: Write the proportion equation
639,726.80 : 959,935.80 = 265,787.60 : x - Step 2: Convert to fraction form
639,726.80/959,935.80 = 265,787.60/x - Step 3: Cross multiply
639,726.80x = 959,935.80 × 265,787.60 - Step 4: Simplify right side
639,726.80x = 255,139,032,436.08 - Step 5: Solve for x
x = 255,139,032,436.08/639,726.80 - Step 6: Final answer
x = 398,824.99
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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.