Finding the Fourth Proportional to 528,644.13, 729,196.97 and 313,631.97
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Solution
The fourth proportional to 528,644.13, 729,196.97 and 313,631.97 is: 432,615.19
Step by Step Solution
- Step 1: Write the proportion equation
528,644.13 : 729,196.97 = 313,631.97 : x - Step 2: Convert to fraction form
528,644.13/729,196.97 = 313,631.97/x - Step 3: Cross multiply
528,644.13x = 729,196.97 × 313,631.97 - Step 4: Simplify right side
528,644.13x = 228,699,482,219.13 - Step 5: Solve for x
x = 228,699,482,219.13/528,644.13 - Step 6: Final answer
x = 432,615.19
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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.