Finding the Fourth Proportional to 638,430.10, 881,027.76 and 351,950.20
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Solution
The fourth proportional to 638,430.10, 881,027.76 and 351,950.20 is: 485,688.09
Step by Step Solution
- Step 1: Write the proportion equation
638,430.10 : 881,027.76 = 351,950.20 : x - Step 2: Convert to fraction form
638,430.10/881,027.76 = 351,950.20/x - Step 3: Cross multiply
638,430.10x = 881,027.76 × 351,950.20 - Step 4: Simplify right side
638,430.10x = 310,077,896,337.55 - Step 5: Solve for x
x = 310,077,896,337.55/638,430.10 - Step 6: Final answer
x = 485,688.09
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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.