Finding the Fourth Proportional to 1,605,924.53, 2,215,971.56 and 917,640.90
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Solution
The fourth proportional to 1,605,924.53, 2,215,971.56 and 917,640.90 is: 1,266,227.70
Step by Step Solution
- Step 1: Write the proportion equation
1,605,924.53 : 2,215,971.56 = 917,640.90 : x - Step 2: Convert to fraction form
1,605,924.53/2,215,971.56 = 917,640.90/x - Step 3: Cross multiply
1,605,924.53x = 2,215,971.56 × 917,640.90 - Step 4: Simplify right side
1,605,924.53x = 2,033,466,121,024.74 - Step 5: Solve for x
x = 2,033,466,121,024.74/1,605,924.53 - Step 6: Final answer
x = 1,266,227.70
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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.