Finding the Fourth Proportional to 698,403.74, 963,822.53 and 392,486.18
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Solution
The fourth proportional to 698,403.74, 963,822.53 and 392,486.18 is: 541,645.19
Step by Step Solution
- Step 1: Write the proportion equation
698,403.74 : 963,822.53 = 392,486.18 : x - Step 2: Convert to fraction form
698,403.74/963,822.53 = 392,486.18/x - Step 3: Cross multiply
698,403.74x = 963,822.53 × 392,486.18 - Step 4: Simplify right side
698,403.74x = 378,287,024,581.24 - Step 5: Solve for x
x = 378,287,024,581.24/698,403.74 - Step 6: Final answer
x = 541,645.19
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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.