Finding the Fourth Proportional to 778,227.38, 1,073,970.18 and 438,695.63
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Solution
The fourth proportional to 778,227.38, 1,073,970.18 and 438,695.63 is: 605,409.21
Step by Step Solution
- Step 1: Write the proportion equation
778,227.38 : 1,073,970.18 = 438,695.63 : x - Step 2: Convert to fraction form
778,227.38/1,073,970.18 = 438,695.63/x - Step 3: Cross multiply
778,227.38x = 1,073,970.18 × 438,695.63 - Step 4: Simplify right side
778,227.38x = 471,146,019,346.46 - Step 5: Solve for x
x = 471,146,019,346.46/778,227.38 - Step 6: Final answer
x = 605,409.21
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1.5x scale
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.