Finding the Fourth Proportional to 523,748.16, 722,752.12 and 320,139.99
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Solution
The fourth proportional to 523,748.16, 722,752.12 and 320,139.99 is: 441,780.75
Step by Step Solution
- Step 1: Write the proportion equation
523,748.16 : 722,752.12 = 320,139.99 : x - Step 2: Convert to fraction form
523,748.16/722,752.12 = 320,139.99/x - Step 3: Cross multiply
523,748.16x = 722,752.12 × 320,139.99 - Step 4: Simplify right side
523,748.16x = 231,381,854,868.58 - Step 5: Solve for x
x = 231,381,854,868.58/523,748.16 - Step 6: Final answer
x = 441,780.75
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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.