Finding the Fourth Proportional to 900,883.74, 1,243,219.69 and 492,985.68
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Solution
The fourth proportional to 900,883.74, 1,243,219.69 and 492,985.68 is: 680,320.31
Step by Step Solution
- Step 1: Write the proportion equation
900,883.74 : 1,243,219.69 = 492,985.68 : x - Step 2: Convert to fraction form
900,883.74/1,243,219.69 = 492,985.68/x - Step 3: Cross multiply
900,883.74x = 1,243,219.69 × 492,985.68 - Step 4: Simplify right side
900,883.74x = 612,889,504,264.04 - Step 5: Solve for x
x = 612,889,504,264.04/900,883.74 - Step 6: Final answer
x = 680,320.31
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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.