Finding the Fourth Proportional to 1,226,430.72, 1,839,892.12 and 427,497.75
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Solution
The fourth proportional to 1,226,430.72, 1,839,892.12 and 427,497.75 is: 641,332.39
Step by Step Solution
- Step 1: Write the proportion equation
1,226,430.72 : 1,839,892.12 = 427,497.75 : x - Step 2: Convert to fraction form
1,226,430.72/1,839,892.12 = 427,497.75/x - Step 3: Cross multiply
1,226,430.72x = 1,839,892.12 × 427,497.75 - Step 4: Simplify right side
1,226,430.72x = 786,549,740,473.99 - Step 5: Solve for x
x = 786,549,740,473.99/1,226,430.72 - Step 6: Final answer
x = 641,332.39
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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.