Finding the Fourth Proportional to 493,493.85, 681,628.74 and 357,312.18
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Solution
The fourth proportional to 493,493.85, 681,628.74 and 357,312.18 is: 493,530.47
Step by Step Solution
- Step 1: Write the proportion equation
493,493.85 : 681,628.74 = 357,312.18 : x - Step 2: Convert to fraction form
493,493.85/681,628.74 = 357,312.18/x - Step 3: Cross multiply
493,493.85x = 681,628.74 × 357,312.18 - Step 4: Simplify right side
493,493.85x = 243,554,251,040.05 - Step 5: Solve for x
x = 243,554,251,040.05/493,493.85 - Step 6: Final answer
x = 493,530.47
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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.