Finding the Fourth Proportional to 690,961.68, 1,036,581.84 and 291,602.88
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Solution
The fourth proportional to 690,961.68, 1,036,581.84 and 291,602.88 is: 437,463.12
Step by Step Solution
- Step 1: Write the proportion equation
690,961.68 : 1,036,581.84 = 291,602.88 : x - Step 2: Convert to fraction form
690,961.68/1,036,581.84 = 291,602.88/x - Step 3: Cross multiply
690,961.68x = 1,036,581.84 × 291,602.88 - Step 4: Simplify right side
690,961.68x = 302,270,249,899.70 - Step 5: Solve for x
x = 302,270,249,899.70/690,961.68 - Step 6: Final answer
x = 437,463.12
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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.