Finding the Fourth Proportional to 456,823.80, 685,235.70 and 338,725.80
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Solution
The fourth proportional to 456,823.80, 685,235.70 and 338,725.80 is: 508,088.70
Step by Step Solution
- Step 1: Write the proportion equation
456,823.80 : 685,235.70 = 338,725.80 : x - Step 2: Convert to fraction form
456,823.80/685,235.70 = 338,725.80/x - Step 3: Cross multiply
456,823.80x = 685,235.70 × 338,725.80 - Step 4: Simplify right side
456,823.80x = 232,107,010,671.06 - Step 5: Solve for x
x = 232,107,010,671.06/456,823.80 - Step 6: Final answer
x = 508,088.70
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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.