Finding the Fourth Proportional to 658,242.84, 908,356.82 and 389,970.84
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Solution
The fourth proportional to 658,242.84, 908,356.82 and 389,970.84 is: 538,148.92
Step by Step Solution
- Step 1: Write the proportion equation
658,242.84 : 908,356.82 = 389,970.84 : x - Step 2: Convert to fraction form
658,242.84/908,356.82 = 389,970.84/x - Step 3: Cross multiply
658,242.84x = 908,356.82 × 389,970.84 - Step 4: Simplify right side
658,242.84x = 354,232,672,115.13 - Step 5: Solve for x
x = 354,232,672,115.13/658,242.84 - Step 6: Final answer
x = 538,148.92
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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.