Finding the Fourth Proportional to 611,606.36, 843,988.14 and 339,691.80
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Solution
The fourth proportional to 611,606.36, 843,988.14 and 339,691.80 is: 468,758.78
Step by Step Solution
- Step 1: Write the proportion equation
611,606.36 : 843,988.14 = 339,691.80 : x - Step 2: Convert to fraction form
611,606.36/843,988.14 = 339,691.80/x - Step 3: Cross multiply
611,606.36x = 843,988.14 × 339,691.80 - Step 4: Simplify right side
611,606.36x = 286,695,850,455.25 - Step 5: Solve for x
x = 286,695,850,455.25/611,606.36 - Step 6: Final answer
x = 468,758.78
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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.