Finding the Fourth Proportional to 641,962.57, 885,908.28 and 355,482.70
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Solution
The fourth proportional to 641,962.57, 885,908.28 and 355,482.70 is: 490,566.09
Step by Step Solution
- Step 1: Write the proportion equation
641,962.57 : 885,908.28 = 355,482.70 : x - Step 2: Convert to fraction form
641,962.57/885,908.28 = 355,482.70/x - Step 3: Cross multiply
641,962.57x = 885,908.28 × 355,482.70 - Step 4: Simplify right side
641,962.57x = 314,925,067,326.76 - Step 5: Solve for x
x = 314,925,067,326.76/641,962.57 - Step 6: Final answer
x = 490,566.09
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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.