Finding the Fourth Proportional to 665,965.80, 998,948.70 and 291,988.80
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Solution
The fourth proportional to 665,965.80, 998,948.70 and 291,988.80 is: 437,983.20
Step by Step Solution
- Step 1: Write the proportion equation
665,965.80 : 998,948.70 = 291,988.80 : x - Step 2: Convert to fraction form
665,965.80/998,948.70 = 291,988.80/x - Step 3: Cross multiply
665,965.80x = 998,948.70 × 291,988.80 - Step 4: Simplify right side
665,965.80x = 291,681,832,174.56 - Step 5: Solve for x
x = 291,681,832,174.56/665,965.80 - Step 6: Final answer
x = 437,983.20
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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.