Finding the Fourth Proportional to 656,417.12, 905,666.67 and 427,311.59
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Solution
The fourth proportional to 656,417.12, 905,666.67 and 427,311.59 is: 589,566.99
Step by Step Solution
- Step 1: Write the proportion equation
656,417.12 : 905,666.67 = 427,311.59 : x - Step 2: Convert to fraction form
656,417.12/905,666.67 = 427,311.59/x - Step 3: Cross multiply
656,417.12x = 905,666.67 × 427,311.59 - Step 4: Simplify right side
656,417.12x = 387,001,860,239.37 - Step 5: Solve for x
x = 387,001,860,239.37/656,417.12 - Step 6: Final answer
x = 589,566.99
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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.