Finding the Fourth Proportional to 687,605.66, 1,031,619.71 and 328,235.12
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Solution
The fourth proportional to 687,605.66, 1,031,619.71 and 328,235.12 is: 492,453.51
Step by Step Solution
- Step 1: Write the proportion equation
687,605.66 : 1,031,619.71 = 328,235.12 : x - Step 2: Convert to fraction form
687,605.66/1,031,619.71 = 328,235.12/x - Step 3: Cross multiply
687,605.66x = 1,031,619.71 × 328,235.12 - Step 4: Simplify right side
687,605.66x = 338,613,814,968.70 - Step 5: Solve for x
x = 338,613,814,968.70/687,605.66 - Step 6: Final answer
x = 492,453.51
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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.